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Class 11 Biotechnology - Principles of Biotechnology - Competent Host Easy Quiz

Topic Quiz • 445 questions • 40 seconds per question.

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सक्षम होस्ट से क्या आशय है?

What is meant by a competent host?

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A. बाहरी डीएनए ग्रहण कर सकने वाली कोशिकाA cell able to take up external DNA

Explanation

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सक्षम होस्ट वह कोशिका है जो बाहरी डीएनए ले सकती है। परीक्षा में इसे डीएनए ग्रहण क्षमता से जोड़ें। / A competent host is a cell that can take up external DNA. For exams link it with DNA uptake ability.

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होस्ट कोशिका को सक्षम क्यों बनाया जाता है?

Why is a host cell made competent?

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B. प्लास्मिड डीएनए को अंदर लेने के लिएTo take plasmid DNA inside

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होस्ट को सक्षम बनाने से प्लास्मिड या रिकॉम्बिनेंट डीएनए उसमें प्रवेश कर सकता है। यह transformation का मुख्य आधार है। / Making a host competent allows plasmid or recombinant DNA to enter it. This is the main basis of transformation.

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बैक्टीरिया में बाहरी डीएनए प्रवेश कराने की प्रक्रिया को क्या कहते हैं?

What is the process of introducing external DNA into bacteria called?

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C. रूपांतरणTransformation

Explanation

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रूपांतरण में बाहरी डीएनए बैक्टीरियल होस्ट में प्रवेश करता है। सक्षम कोशिकाएँ इस प्रक्रिया को आसान बनाती हैं। / In transformation external DNA enters a bacterial host. Competent cells make this process easier.

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सक्षम कोशिका और रूपांतरित कोशिका में सही अंतर क्या है?

What is the correct difference between a competent cell and a transformed cell?

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D. सक्षम कोशिका डीएनए लेने को तैयार है और रूपांतरित कोशिका डीएनए ले चुकी हैCompetent cell is ready to take DNA and transformed cell has taken DNA

Explanation

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सक्षम कोशिका डीएनए ग्रहण के लिए तैयार होती है। डीएनए लेने के बाद वह रूपांतरित कोशिका कहलाती है। / A competent cell is ready for DNA uptake. After taking DNA it is called a transformed cell.

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रासायनिक सक्षमकरण में कैल्शियम क्लोराइड का उपयोग किसलिए होता है?

Why is calcium chloride used in chemical competence?

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A. डीएनए ग्रहण में सहायता के लिएTo help DNA uptake

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कैल्शियम आयन डीएनए और कोशिका सतह के बीच प्रतिकर्षण घटाने में मदद कर सकते हैं। इसे रासायनिक transformation से जोड़ें। / Calcium ions can help reduce repulsion between DNA and the cell surface. Link it with chemical transformation.

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हीट शॉक का मुख्य उद्देश्य क्या है?

What is the main purpose of heat shock?

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B. प्लास्मिड प्रवेश में मदद करनाTo help plasmid entry

Explanation

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हीट शॉक कोशिका झिल्ली की पारगम्यता को अस्थायी रूप से बढ़ा सकता है। इससे प्लास्मिड प्रवेश आसान हो सकता है। / Heat shock can temporarily increase membrane permeability. This can make plasmid entry easier.

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इलेक्ट्रोपोरेशन में डीएनए प्रवेश कैसे बढ़ाया जाता है?

How is DNA entry increased in electroporation?

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C. विद्युत पल्स सेBy an electric pulse

Explanation

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इलेक्ट्रोपोरेशन में विद्युत पल्स कोशिका झिल्ली को अस्थायी रूप से पारगम्य बनाता है। इससे डीएनए uptake बढ़ता है। / Electroporation uses an electric pulse to make the membrane temporarily permeable. This increases DNA uptake.

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प्लास्मिड क्लोनिंग में सामान्य बैक्टीरियल होस्ट कौन सा है?

Which is a common bacterial host in plasmid cloning?

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D. ई कोलाईE coli

Explanation

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ई कोलाई तेजी से बढ़ता है और प्लास्मिड रख सकता है। इसलिए यह क्लोनिंग में सामान्य होस्ट है। / E coli grows fast and can maintain plasmids. Therefore it is a common cloning host.

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सक्षम होस्ट प्रयोग में selectable marker क्यों उपयोगी है?

Why is a selectable marker useful in a competent host experiment?

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A. रूपांतरित कोशिकाएँ चुनने के लिएTo select transformed cells

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Selectable marker उन कोशिकाओं को पहचानने में मदद करता है जिनमें vector गया है। एंटीबायोटिक प्रतिरोध इसका सामान्य उदाहरण है। / A selectable marker helps identify cells that received the vector. Antibiotic resistance is a common example.

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एंटीबायोटिक प्लेट पर transformed bacteria क्यों बढ़ सकते हैं?

Why can transformed bacteria grow on an antibiotic plate?

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B. क्योंकि उनमें resistance marker वाला plasmid हो सकता हैBecause they may have a plasmid with a resistance marker

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Resistance marker बैक्टीरिया को संबंधित एंटीबायोटिक पर जीवित रहने देता है। इससे transformed cells चुनी जाती हैं। / A resistance marker lets bacteria survive on the related antibiotic. This selects transformed cells.

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Non-transformed bacteria selection plate पर क्यों नहीं बढ़ते?

Why do non-transformed bacteria not grow on a selection plate?

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C. उनमें resistance marker नहीं होताThey lack the resistance marker

Explanation

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Non-transformed cells ने plasmid नहीं लिया होता इसलिए marker absent रहता है। एंटीबायोटिक उनकी growth रोक देता है। / Non-transformed cells have not taken the plasmid so the marker is absent. Antibiotic stops their growth.

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Transformation efficiency का सरल अर्थ क्या है?

What is the simple meaning of transformation efficiency?

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D. डीएनए लेने वाली सफल कोशिकाओं की संख्याNumber of cells successfully taking DNA

Explanation

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Transformation efficiency बताती है कि कितनी कोशिकाएँ डीएनए लेकर transform हुईं। अधिक efficiency से अधिक colonies मिल सकती हैं। / Transformation efficiency tells how many cells took DNA and became transformed. Higher efficiency can give more colonies.

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रूपांतरण के बाद recovery medium क्यों दिया जाता है?

Why is recovery medium given after transformation?

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A. कोशिकाओं को संभलने और marker express करने का समय देने के लिएTo let cells recover and express marker

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Recovery step कोशिकाओं को stress से उबरने देती है। इससे selection plate पर survival बेहतर हो सकता है। / The recovery step lets cells recover from stress. This can improve survival on selection plates.

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सक्षम कोशिकाओं को अक्सर ठंडा क्यों रखा जाता है?

Why are competent cells often kept cold?

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B. competence और viability बनाए रखने के लिएTo maintain competence and viability

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सक्षम कोशिकाएँ संवेदनशील होती हैं और ठंड में स्थिर रहती हैं। गलत तापमान उनकी क्षमता घटा सकता है। / Competent cells are sensitive and remain stable in cold. Wrong temperature can reduce their ability.

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Host-vector compatibility का सही अर्थ क्या है?

What is the correct meaning of host-vector compatibility?

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C. Vector host में replicate और maintain हो सकेVector can replicate and be maintained in host

Explanation

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Vector का ori और marker host system में काम करना चाहिए। Compatibility cloning success के लिए जरूरी है। / The vector ori and marker should work in the host system. Compatibility is necessary for cloning success.

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Competent host में plasmid बनाए रखने में क्या मदद करता है?

What helps maintain a plasmid in a competent host?

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D. functional ori और selection pressureFunctional ori and selection pressure

Explanation

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Ori plasmid replication कराता है और selection pressure plasmid-containing cells को बनाए रखता है। दोनों maintenance में मदद करते हैं। / Ori allows plasmid replication and selection pressure maintains plasmid-containing cells. Both help maintenance.

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Plasmid uptake के बाद कौन सा step सामान्यतः किया जाता है?

Which step is generally done after plasmid uptake?

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B. Selection plate पर growth देखनाChecking growth on selection plate

Explanation

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Transformation के बाद cells को selection medium पर बढ़ाया जाता है। इससे plasmid लेने वाली cells पहचान में आती हैं। / After transformation cells are grown on selection medium. This identifies cells that took plasmid.

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माइक्रोइंजेक्शन में डीएनए कहाँ डाला जा सकता है?

Where can DNA be introduced in microinjection?

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C. सीधे कोशिका या nucleus मेंDirectly into a cell or nucleus

Explanation

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Microinjection में DNA को सीधे cell या nucleus में inject किया जा सकता है। यह bacterial heat shock से अलग method है। / In microinjection DNA can be directly injected into a cell or nucleus. It is different from bacterial heat shock.

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Gene gun method किससे संबंधित है?

Gene gun method is related to what?

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D. DNA-coated particles को cells में भेजनाSending DNA-coated particles into cells

Explanation

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Gene gun में DNA-coated particles cells में पहुँचाए जाते हैं। यह plant transformation में उपयोगी हो सकता है। / In gene gun DNA-coated particles are delivered into cells. It can be useful in plant transformation.

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Agrobacterium-mediated transformation किस host से अधिक जुड़ा है?

Agrobacterium-mediated transformation is more linked with which host?

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A. Plant cells

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Agrobacterium plant cells में DNA transfer कर सकता है। इसलिए यह plant biotechnology में महत्वपूर्ण है। / Agrobacterium can transfer DNA into plant cells. Therefore it is important in plant biotechnology.

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Recombinant protein production में common bacterial host कौन सा है?

Which is a common bacterial host for recombinant protein production?

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B. Escherichia coli

Explanation

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E coli recombinant protein expression और plasmid cloning दोनों में common host है। Expression के लिए सही vector और conditions चाहिए। / E coli is common in recombinant protein expression and plasmid cloning. Expression needs proper vector and conditions.

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Yeast host क्यों उपयोगी हो सकता है?

Why can a yeast host be useful?

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C. यह eukaryotic features दे सकता हैIt can provide eukaryotic features

Explanation

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Yeast eukaryotic host है और कुछ eukaryotic proteins के लिए उपयोगी हो सकता है। इसे bacteria से अलग host मानें। / Yeast is a eukaryotic host and can be useful for some eukaryotic proteins. Treat it as different from bacteria.

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Mammalian host cells किस काम में उपयोगी हो सकती हैं?

Mammalian host cells can be useful for what?

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D. Complex eukaryotic protein expression

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Mammalian cells complex eukaryotic proteins के expression में उपयोगी हो सकती हैं। लेकिन इन्हें culture करना अधिक जटिल हो सकता है। / Mammalian cells can be useful for expression of complex eukaryotic proteins. But culturing them can be more complex.

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Competent host चुनते समय कौन सा factor महत्वपूर्ण है?

Which factor is important while choosing a competent host?

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A. Vector compatibility और experiment goalVector compatibility and experiment goal

Explanation

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Host को vector maintain करना चाहिए और experiment के उद्देश्य के लिए suitable होना चाहिए। यही host choice का आधार है। / The host should maintain the vector and suit the experiment goal. This is the basis of host choice.

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Transformation के बाद colony किससे बन सकती है?

After transformation a colony can arise from what?

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B. एक transformed cell की growthGrowth of one transformed cell

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हर colony एक transformed cell से बनी population हो सकती है। इसलिए colonies clone screening में उपयोगी हैं। / Each colony can be a population from one transformed cell. Therefore colonies are useful in clone screening.

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Transformation में sterile technique क्यों जरूरी है?

Why is sterile technique important in transformation?

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C. Contamination रोकने के लिएTo prevent contamination

Explanation

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Contamination गलत colonies और गलत results दे सकती है। इसलिए sterile handling जरूरी है। / Contamination can give wrong colonies and wrong results. Therefore sterile handling is necessary.

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Competent cells की viability का अर्थ क्या है?

What does viability of competent cells mean?

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D. Cells जीवित और growth capable हैंCells are alive and capable of growth

Explanation

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Viability बताती है कि cells जीवित हैं और transformation के बाद बढ़ सकती हैं। मृत cells colonies नहीं बनातीं। / Viability means cells are alive and can grow after transformation. Dead cells do not form colonies.

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Transformation में बहुत harsh treatment का क्या नुकसान हो सकता है?

What can be the harm of very harsh treatment in transformation?

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A. Cells मर सकती हैंCells may die

Explanation

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बहुत harsh conditions cell viability घटा सकती हैं। अच्छे transformation में competence और survival दोनों जरूरी हैं। / Very harsh conditions can reduce cell viability. Good transformation needs both competence and survival.

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Competent host में recombinant plasmid की पहचान कैसे शुरू हो सकती है?

How can identification of a recombinant plasmid begin in a competent host?

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B. Selection और screening सेBy selection and screening

Explanation

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Selection transformed cells चुनती है और screening recombinant clones पहचानती है। दोनों cloning workflow में महत्वपूर्ण हैं। / Selection chooses transformed cells and screening identifies recombinant clones. Both are important in cloning workflow.

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Blue-white screening में competent host की भूमिका क्या होती है?

What is the role of competent host in blue-white screening?

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C. Vector लेकर colonies बनानाTaking vector and forming colonies

Explanation

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Competent host vector लेकर colonies बनाता है जिनका रंग screening में देखा जाता है। इससे recombinant पहचान में मदद मिलती है। / The competent host takes the vector and forms colonies whose color is checked in screening. This helps identify recombinants.

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Plasmid uptake सफल हुआ या नहीं यह पहले कैसे देखा जा सकता है?

How can plasmid uptake success first be checked?

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D. Selectable marker based growth सेBy selectable marker based growth

Explanation

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Marker based growth transformed cells का प्रारंभिक संकेत देता है। Insert confirmation के लिए अलग screening चाहिए। / Marker based growth gives an initial sign of transformed cells. Separate screening is needed for insert confirmation.

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Competent host के बारे में कौन सा कथन गलत है?

Which statement about a competent host is wrong?

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A. यह हमेशा starch-digesting enzyme होता हैIt is always a starch-digesting enzyme

Explanation

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Competent host enzyme नहीं बल्कि DNA uptake capable cell है। इसे transformation context में याद रखें। / A competent host is not an enzyme but a cell capable of DNA uptake. Remember it in transformation context.

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बैक्टीरियल cell wall और membrane DNA entry के लिए क्या काम करते हैं?

What role do bacterial cell wall and membrane play for DNA entry?

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B. वे DNA entry के लिए barrier होते हैंThey are barriers for DNA entry

Explanation

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Bacterial surface natural barrier की तरह काम करती है। Competence treatment इस barrier को कम करने में मदद करता है। / The bacterial surface acts as a natural barrier. Competence treatment helps reduce this barrier.

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डीएनए और bacterial surface दोनों पर negative charge होने से क्या समस्या होती है?

What problem occurs because DNA and bacterial surface both have negative charge?

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C. DNA uptake कठिन हो सकता हैDNA uptake can be difficult

Explanation

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Negative charges के कारण DNA और cell surface एक-दूसरे को repel कर सकते हैं। Calcium ions इस समस्या को घटाने में मदद कर सकते हैं। / Because of negative charges DNA and cell surface can repel each other. Calcium ions can help reduce this problem.

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Divalent cations transformation में कैसे मदद कर सकते हैं?

How can divalent cations help in transformation?

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D. DNA और cell surface charge effects कम कर सकते हैंThey can reduce charge effects between DNA and cell surface

Explanation

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Calcium जैसे divalent cations DNA uptake को आसान बना सकते हैं। यह chemical competence का basic idea है। / Divalent cations such as calcium can make DNA uptake easier. This is a basic idea of chemical competence.

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किस method में कैल्शियम क्लोराइड और heat shock commonly जुड़े हैं?

Which method is commonly associated with calcium chloride and heat shock?

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A. Chemical transformation

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Chemical transformation में calcium chloride treatment और heat shock common steps हैं। यह bacterial plasmid uptake में उपयोगी है। / Chemical transformation commonly uses calcium chloride treatment and heat shock. It is useful for bacterial plasmid uptake.

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Electrocompetent cells किस method के लिए तैयार की जाती हैं?

Electrocompetent cells are prepared for which method?

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B. Electroporation

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Electrocompetent cells electroporation के लिए तैयार cells होती हैं। इनमें salt कम रखना important हो सकता है। / Electrocompetent cells are cells prepared for electroporation. Keeping salt low can be important.

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Electroporation sample में बहुत अधिक salt होने से क्या खतरा है?

What is the risk of too much salt in an electroporation sample?

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C. Electric arcing हो सकती हैElectric arcing may occur

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High salt electroporation में arcing और cell damage कर सकता है। इसलिए clean low-salt DNA useful होता है। / High salt can cause arcing and cell damage in electroporation. Therefore clean low-salt DNA is useful.

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Transformation में control plate क्यों लगाई जाती है?

Why is a control plate used in transformation?

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D. Experiment result की सही व्याख्या के लिएFor correct interpretation of experiment result

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Control plate बताती है कि cells और selection system ठीक काम कर रहे हैं या नहीं। इससे result interpretation सुरक्षित होती है। / A control plate shows whether cells and selection system are working properly. This makes result interpretation safer.

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Negative control में plasmid न डालने का उद्देश्य क्या है?

What is the purpose of not adding plasmid in a negative control?

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A. Background growth check करनाTo check background growth

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No-plasmid control antibiotic plate पर unexpected growth दिखा सकता है। इससे contamination या selection problem पकड़ी जा सकती है। / A no-plasmid control can show unexpected growth on an antibiotic plate. This can reveal contamination or selection problems.

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Positive control transformation में क्यों उपयोगी है?

Why is a positive control useful in transformation?

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B. Cells की competence check करने के लिएTo check cell competence

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Known plasmid वाला positive control बताता है कि competent cells transform हो सकती हैं। यह method validation में मदद करता है। / A positive control with known plasmid shows that competent cells can transform. It helps validate the method.

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Plasmid size transformation पर क्या असर डाल सकता है?

How can plasmid size affect transformation?

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C. बहुत बड़ा plasmid uptake कठिन कर सकता हैA very large plasmid can make uptake harder

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Large plasmids सामान्यतः छोटे plasmids से कम efficiently transform हो सकते हैं। इसे practical factor मानें। / Large plasmids can generally transform less efficiently than small plasmids. Treat this as a practical factor.

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Transformation में DNA purity क्यों महत्वपूर्ण है?

Why is DNA purity important in transformation?

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D. Impurities uptake और cell survival घटा सकती हैंImpurities can reduce uptake and cell survival

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Contaminants competent cells को नुकसान पहुँचा सकते हैं या uptake घटा सकते हैं। Clean DNA transformation में मदद करता है। / Contaminants can harm competent cells or reduce uptake. Clean DNA helps transformation.

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Recombinant DNA maintain करने के लिए कौन सी condition उपयोगी है?

Which condition is useful for maintaining recombinant DNA?

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A. उचित selection mediumProper selection medium

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Selection medium vector-containing cells को बनाए रखने में मदद करता है। इससे recombinant plasmid loss कम हो सकता है। / Selection medium helps maintain vector-containing cells. This can reduce recombinant plasmid loss.

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Competent host से recombinant clone कैसे प्राप्त होता है?

How is a recombinant clone obtained from a competent host?

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B. Transformed colony isolate करकेBy isolating a transformed colony

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एक transformed colony में recombinant plasmid हो सकता है। Colony isolation clone selection का basic step है। / A transformed colony may contain a recombinant plasmid. Colony isolation is a basic step of clone selection.

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Colony में insert की उपस्थिति check करने का quick तरीका कौन सा है?

Which quick method can check insert presence in a colony?

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C. Colony PCR

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Colony PCR recombinant colony में insert की presence का quick संकेत दे सकता है। Final confirmation sequencing से हो सकती है। / Colony PCR can quickly indicate insert presence in a recombinant colony. Final confirmation can be by sequencing.

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Competent host से plasmid isolation किसलिए किया जाता है?

Why is plasmid isolation done from a competent host?

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D. Plasmid DNA निकालकर confirm या use करने के लिएTo extract plasmid DNA for confirmation or use

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Transformed host से plasmid isolate करके restriction analysis या sequencing की जा सकती है। यह clone confirmation में मदद करता है। / Plasmid can be isolated from transformed host for restriction analysis or sequencing. This helps clone confirmation.

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Competent Host topic का सुरक्षित सार क्या है?

What is the safe summary of the Competent Host topic?

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A. DNA लेने और recombinant vector maintain करने वाली suitable cellA suitable cell that takes DNA and maintains recombinant vector

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Competent host बाहरी DNA लेने और vector को host में बढ़ाने के लिए उपयोगी cell है। इसे transformation से जोड़ें। / A competent host is a useful cell for taking external DNA and propagating a vector. Link it with transformation.

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Competent host के लिए सबसे important exam pair कौन सा है?

Which is the most important exam pair for competent host?

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B. Competence-DNA uptake और transformation-vector entryCompetence-DNA uptake and transformation-vector entry

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Competence DNA लेने की क्षमता है और transformation vector entry की प्रक्रिया है। यह pair topic का core है। / Competence is the ability to take DNA and transformation is the process of vector entry. This pair is the core of the topic.

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Natural competence का अर्थ क्या है?

What does natural competence mean?

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A. कोशिका का प्राकृतिक रूप से बाहरी DNA लेनाNatural ability of a cell to take external DNA

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कुछ bacteria naturally DNA uptake कर सकते हैं। इसे natural competence कहा जाता है। / Some bacteria can naturally take up DNA. This is called natural competence.

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Artificial competence कब बनाई जाती है?

When is artificial competence created?

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B. जब lab treatment से cells को DNA uptake योग्य बनाया जाता हैWhen cells are made able to take DNA by lab treatment

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Artificial competence lab methods जैसे chemical treatment या electroporation से बनाई जाती है। यह cloning में common है। / Artificial competence is made by lab methods such as chemical treatment or electroporation. It is common in cloning.

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Chemical competent ई कोलाई बनाने में कौन सा salt commonly पढ़ा जाता है?

Which salt is commonly studied for making chemically competent E coli?

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C. Calcium chloride

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Calcium chloride E coli competence के लिए common chemical treatment है। यह DNA uptake को आसान बना सकता है। / Calcium chloride is a common chemical treatment for E coli competence. It can make DNA uptake easier.

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Cold calcium chloride treatment का मुख्य उद्देश्य क्या है?

What is the main purpose of cold calcium chloride treatment?

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D. Cell surface को plasmid uptake के लिए तैयार करनाPreparing cell surface for plasmid uptake

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Cold calcium chloride treatment bacterial cells को plasmid uptake के लिए competent बनाता है। Heat shock बाद में entry बढ़ा सकता है। / Cold calcium chloride treatment makes bacterial cells competent for plasmid uptake. Heat shock can later increase entry.

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Heat shock में sudden temperature change क्यों दिया जाता है?

Why is sudden temperature change given in heat shock?

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A. DNA entry के लिए membrane permeability बढ़ाने में मदद करने के लिएTo help increase membrane permeability for DNA entry

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Heat shock temporary permeability change में मदद कर सकता है। इससे plasmid DNA cells में प्रवेश कर सकता है। / Heat shock can help cause temporary permeability change. This can allow plasmid DNA to enter cells.

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Electroporation chemical transformation से कैसे अलग है?

How is electroporation different from chemical transformation?

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B. यह electric pulse का उपयोग करता हैIt uses an electric pulse

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Electroporation में electric pulse से cells temporarily permeable होती हैं। Chemical method में salts और heat shock common होते हैं। / Electroporation uses an electric pulse to make cells temporarily permeable. Chemical methods commonly use salts and heat shock.

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Competent host के लिए exponential growth phase क्यों उपयोगी हो सकता है?

Why can exponential growth phase be useful for competent host preparation?

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C. Cells active और healthier होती हैंCells are active and healthier

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Active growing cells competence preparation में बेहतर respond कर सकती हैं। इसलिए culture stage important होता है। / Actively growing cells can respond better during competence preparation. Therefore culture stage is important.

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Overgrown bacterial culture competent cell preparation में क्यों problem हो सकती है?

Why can an overgrown bacterial culture be a problem in competent cell preparation?

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D. Cells कम healthy और less competent हो सकती हैंCells may be less healthy and less competent

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Overgrown culture में cells stress या stationary phase में हो सकती हैं। इससे transformation efficiency घट सकती है। / In an overgrown culture cells may be stressed or in stationary phase. This can reduce transformation efficiency.

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Competent cells को gently handle क्यों करना चाहिए?

Why should competent cells be handled gently?

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A. वे fragile हो सकती हैं और viability घट सकती हैThey can be fragile and viability may decrease

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Competent cells sensitive होती हैं। Harsh mixing या heat से cell survival और competence घट सकती है। / Competent cells are sensitive. Harsh mixing or heat can reduce cell survival and competence.

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Transformation mixture को ice पर रखने का कारण क्या है?

Why is transformation mixture kept on ice?

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B. Competent cells stable रखने के लिएTo keep competent cells stable

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Ice competent cells की stability और viability बचाने में मदद करता है। Heat shock step को controlled रखा जाता है। / Ice helps preserve stability and viability of competent cells. The heat shock step is kept controlled.

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Plasmid DNA की मात्रा बहुत अधिक होने पर क्या समस्या हो सकती है?

What problem can occur if plasmid DNA amount is too high?

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C. Cells stress हो सकती हैं और efficiency घट सकती हैCells may get stressed and efficiency may decrease

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Excess DNA या impurities cells को stress कर सकती हैं। Optimal amount transformation efficiency के लिए बेहतर होता है। / Excess DNA or impurities can stress cells. An optimal amount is better for transformation efficiency.

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Transformation में clean plasmid DNA क्यों पसंद किया जाता है?

Why is clean plasmid DNA preferred in transformation?

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D. Impurities कम होने से uptake और survival बेहतर हो सकते हैंFewer impurities can improve uptake and survival

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Clean DNA competent cells को कम नुकसान पहुँचाता है। इससे transformation success बढ़ सकती है। / Clean DNA harms competent cells less. This can increase transformation success.

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Plasmid लेने के बाद gene expression तुरंत क्यों जरूरी नहीं होता?

Why is gene expression not always immediately required after plasmid uptake?

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A. Cloning में पहले DNA copy और selection important होते हैंIn cloning DNA copy and selection are important first

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Simple cloning में goal insert DNA की copies बनाना होता है। Expression vector अलग purpose के लिए होता है। / In simple cloning the goal is to make copies of insert DNA. An expression vector has a different purpose.

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Host strain का चुनाव क्यों मायने रखता है?

Why does host strain choice matter?

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B. Different strains cloning या expression के लिए अलग गुण रखते हैंDifferent strains have different properties for cloning or expression

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Host strains में mutations और properties अलग हो सकती हैं। इसलिए cloning और protein expression में strain choice important है। / Host strains can differ in mutations and properties. Therefore strain choice is important in cloning and protein expression.

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Cloning host में recombination-deficient strain क्यों उपयोगी हो सकता है?

Why can a recombination-deficient strain be useful as a cloning host?

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C. Insert stability बेहतर रख सकता हैIt can improve insert stability

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Recombination-deficient host unwanted rearrangement घटा सकता है। इससे cloned insert stable रह सकता है। / A recombination-deficient host can reduce unwanted rearrangement. This can keep the cloned insert stable.

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Endonuclease-deficient host किसमें मदद कर सकता है?

What can an endonuclease-deficient host help with?

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D. Plasmid DNA quality बेहतर रखने मेंKeeping plasmid DNA quality better

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कुछ host mutations plasmid DNA degradation कम कर सकती हैं। इससे plasmid preparation quality बेहतर हो सकती है। / Some host mutations can reduce plasmid DNA degradation. This can improve plasmid preparation quality.

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Expression host में protease-deficient strain कब उपयोगी हो सकता है?

When can a protease-deficient strain be useful in an expression host?

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A. Protein degradation कम करने के लिएTo reduce protein degradation

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Protease-deficient strains recombinant protein degradation कम कर सकते हैं। यह expression experiments में उपयोगी है। / Protease-deficient strains can reduce recombinant protein degradation. This is useful in expression experiments.

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ई कोलाई डीएच फाइव अल्फा type strains किस purpose से अधिक जुड़े हैं?

E coli DH5 alpha type strains are more associated with which purpose?

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B. Routine plasmid cloning

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DH5 alpha जैसे strains plasmid cloning और maintenance के लिए common हैं। इन्हें expression strain से अलग समझें। / Strains like DH5 alpha are common for plasmid cloning and maintenance. Understand them separately from expression strains.

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ई कोलाई बीएल ट्वेंटी वन type strains किस purpose से अधिक जुड़े हैं?

E coli BL21 type strains are more associated with which purpose?

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C. Recombinant protein expression

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BL21 type strains protein expression के लिए commonly used होते हैं। इन्हें cloning-only hosts से अलग पहचानें। / BL21 type strains are commonly used for protein expression. Distinguish them from cloning-only hosts.

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Competent host में plasmid stability का अर्थ क्या है?

What does plasmid stability mean in a competent host?

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D. Plasmid host में बना रहेPlasmid remains maintained in host

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Plasmid stability का अर्थ है host cells plasmid को maintain करें। Selection pressure stability में मदद करता है। / Plasmid stability means host cells maintain the plasmid. Selection pressure helps stability.

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Plasmid loss कब हो सकता है?

When can plasmid loss occur?

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A. Selection pressure absent होSelection pressure is absent

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Selection pressure न हो तो cells plasmid खो सकती हैं। Marker-based selection plasmid maintenance में मदद करती है। / Without selection pressure cells may lose the plasmid. Marker-based selection helps plasmid maintenance.

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Competent host को freezer stock में क्यों रखा जा सकता है?

Why can a competent host be kept as a freezer stock?

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B. Future use के लिए strain preserve करने के लिएTo preserve strain for future use

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Freezer stock useful strain को long-term preserve करता है। इससे same host future experiments में use हो सकता है। / A freezer stock preserves a useful strain for long term. This allows the same host to be used in future experiments.

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Glycerol stock का उपयोग किसलिए होता है?

What is glycerol stock used for?

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C. Microbial strain preservation

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Glycerol stock bacteria को freezing damage से बचाने में मदद करता है। यह strain preservation का common method है। / Glycerol stock helps protect bacteria from freezing damage. It is a common method for strain preservation.

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Transformation के बाद incubation temperature क्यों controlled रखा जाता है?

Why is incubation temperature controlled after transformation?

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D. Host growth और plasmid maintenance के लिएFor host growth and plasmid maintenance

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हर host का suitable growth temperature होता है। गलत temperature growth या plasmid stability को प्रभावित कर सकता है। / Each host has a suitable growth temperature. Wrong temperature can affect growth or plasmid stability.

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ई कोलाई के लिए सामान्य lab incubation temperature क्या माना जाता है?

What is considered a common lab incubation temperature for E coli?

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A. लगभग 37 डिग्री सेल्सियसAbout 37 degrees Celsius

Explanation

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E coli सामान्यतः 37 डिग्री सेल्सियस के आसपास अच्छी growth दिखाता है। Exact condition experiment पर निर्भर कर सकती है। / E coli generally grows well around 37 degrees Celsius. Exact condition can depend on the experiment.

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Antibiotic concentration बहुत कम हो तो क्या समस्या हो सकती है?

What can happen if antibiotic concentration is too low?

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B. Non-transformed cells भी grow कर सकती हैंNon-transformed cells may also grow

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कम antibiotic selection को कमजोर कर सकता है। इससे background growth बढ़ सकती है। / Too little antibiotic can weaken selection. This can increase background growth.

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Antibiotic concentration बहुत अधिक हो तो क्या समस्या हो सकती है?

What can happen if antibiotic concentration is too high?

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C. Transformed cells की growth भी घट सकती हैGrowth of transformed cells may also decrease

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बहुत अधिक antibiotic transformed cells पर भी stress डाल सकता है। Correct concentration selection के लिए जरूरी है। / Too much antibiotic can stress even transformed cells. Correct concentration is needed for selection.

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Plasmid copy number किससे प्रभावित हो सकता है?

What can affect plasmid copy number?

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D. Vector ori और host conditionsVector ori and host conditions

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Copy number vector origin और host physiology से प्रभावित हो सकता है। इससे plasmid yield बदल सकती है। / Copy number can be affected by vector origin and host physiology. This can change plasmid yield.

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High-copy plasmid host पर क्या प्रभाव डाल सकता है?

What effect can a high-copy plasmid have on host?

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A. Metabolic load बढ़ा सकता हैIt can increase metabolic load

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High-copy plasmid cells पर extra burden डाल सकता है। इसलिए host growth कभी-कभी slow हो सकती है। / A high-copy plasmid can put extra burden on cells. Therefore host growth may sometimes slow down.

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Low-copy plasmid कब लाभकारी हो सकता है?

When can a low-copy plasmid be beneficial?

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B. Toxic insert maintain करने मेंIn maintaining a toxic insert

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Toxic या unstable inserts high copy में host को नुकसान दे सकते हैं। Low-copy plasmid ऐसे inserts के लिए बेहतर हो सकता है। / Toxic or unstable inserts can harm host at high copy. A low-copy plasmid can be better for such inserts.

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Host restriction-modification system cloning में क्या समस्या कर सकता है?

What problem can a host restriction-modification system cause in cloning?

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C. Foreign DNA degrade कर सकता हैIt can degrade foreign DNA

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कुछ hosts foreign DNA को restriction enzymes से काट सकते हैं। Cloning strains में यह problem कम की जाती है। / Some hosts can cut foreign DNA with restriction enzymes. This problem is reduced in cloning strains.

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Cloning host में restriction activity कम होना क्यों उपयोगी है?

Why is reduced restriction activity useful in a cloning host?

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D. Incoming plasmid DNA protect रहता हैIncoming plasmid DNA remains protected

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Reduced restriction activity foreign plasmid degradation घटाती है। इससे transformation success बढ़ सकती है। / Reduced restriction activity decreases degradation of foreign plasmid. This can improve transformation success.

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Plasmid methylation status क्यों important हो सकता है?

Why can plasmid methylation status matter?

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A. Host restriction enzymes DNA recognition को प्रभावित कर सकते हैंHost restriction enzymes can be affected by DNA recognition

Explanation

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Methylation कुछ restriction systems से DNA को बचा सकती है या digestion pattern बदल सकती है। यह host system पर निर्भर करता है। / Methylation can protect DNA from some restriction systems or change digestion pattern. It depends on the host system.

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Transformation में sterile spreader क्यों उपयोग किया जाता है?

Why is a sterile spreader used in transformation?

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B. Contamination रोकने के लिएTo prevent contamination

Explanation

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Sterilization unwanted microbes को plate पर आने से रोकती है। यह सही colony interpretation के लिए जरूरी है। / Sterilization prevents unwanted microbes from entering the plate. It is necessary for correct colony interpretation.

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Plate पर बहुत अधिक colonies होने से क्या समस्या हो सकती है?

What problem can too many colonies on a plate cause?

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C. Single colonies isolate करना कठिन होगाIt will be difficult to isolate single colonies

Explanation

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बहुत dense growth में अलग colonies चुनना कठिन होता है। Proper dilution clone isolation में मदद करता है। / In very dense growth picking separate colonies is difficult. Proper dilution helps clone isolation.

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बहुत कम colonies मिलने का एक कारण क्या हो सकता है?

What can be one reason for getting very few colonies?

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D. Low transformation efficiency

Explanation

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Few colonies low competence low DNA quality या wrong selection का संकेत हो सकती हैं। यह troubleshooting point है। / Few colonies can indicate low competence poor DNA quality or wrong selection. This is a troubleshooting point.

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Positive control plate पर no colonies क्या बता सकता है?

What can no colonies on a positive control plate indicate?

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A. Cells competent नहीं रहीं या method failedCells are not competent or method failed

Explanation

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Positive control failure method या cells की problem दिखाता है। यह troubleshooting में important है। / Failure of positive control shows a problem with the method or cells. It is important in troubleshooting.

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Negative control पर colonies आना क्या बता सकता है?

What can colonies on a negative control indicate?

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B. Contamination या selection failureContamination or selection failure

Explanation

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Negative control में plasmid नहीं होता। Colonies contamination या antibiotic selection problem दिखा सकती हैं। / Negative control has no plasmid. Colonies can show contamination or antibiotic selection problem.

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Plasmid DNA entry के बाद सबसे पहले क्या जरूरी है?

After plasmid DNA entry what is important first?

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C. Cells survive करें और marker express करेंCells survive and express marker

Explanation

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Transformation के बाद cells को recover होना और resistance marker express करना चाहिए। तभी वे selection plate पर बढ़ेंगी। / After transformation cells should recover and express resistance marker. Then they can grow on selection plates.

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Expression host में inducer कब use हो सकता है?

When can an inducer be used in an expression host?

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D. Gene expression शुरू कराने के लिएTo start gene expression

Explanation

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Inducer controlled promoter को activate कर सकता है। यह recombinant protein expression में common idea है। / An inducer can activate a controlled promoter. This is a common idea in recombinant protein expression.

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IPTG किस concept से जुड़ा हो सकता है?

IPTG can be linked with which concept?

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A. Induction of gene expression

Explanation

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IPTG lac-based expression systems में inducer की तरह use हो सकता है। इसे expression host context में याद रखें। / IPTG can be used as an inducer in lac-based expression systems. Remember it in expression host context.

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Expression host में inclusion bodies क्या संकेत दे सकती हैं?

What can inclusion bodies indicate in an expression host?

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B. Protein insoluble aggregates बन सकता हैProtein may form insoluble aggregates

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कुछ recombinant proteins insoluble aggregates बना सकते हैं जिन्हें inclusion bodies कहते हैं। Expression conditions optimize करनी पड़ सकती हैं। / Some recombinant proteins can form insoluble aggregates called inclusion bodies. Expression conditions may need optimization.

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Expression host में lower temperature कब मदद कर सकता है?

When can lower temperature help in an expression host?

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C. Protein folding बेहतर करने के लिएTo improve protein folding

Explanation

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Lower temperature कुछ proteins की solubility और folding बेहतर कर सकता है। यह expression optimization का simple idea है। / Lower temperature can improve solubility and folding of some proteins. This is a simple idea of expression optimization.

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Plant host transformation के बाद regeneration क्यों important है?

Why is regeneration important after plant host transformation?

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D. Transformed cell से पूरा plant बनाने के लिएTo make a whole plant from transformed cell

Explanation

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Plant biotechnology में transformed cells से complete plant regenerate करना पड़ सकता है। यह bacterial cloning से अलग है। / In plant biotechnology a complete plant may need to be regenerated from transformed cells. This differs from bacterial cloning.

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Protoplast transformation में protoplast क्या होता है?

What is a protoplast in protoplast transformation?

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A. Cell wall हटाई हुई plant cellPlant cell with cell wall removed

Explanation

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Protoplast में cell wall हटाई जाती है। इससे DNA delivery आसान हो सकती है। / In a protoplast the cell wall is removed. This can make DNA delivery easier.

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Animal cells में selectable marker किसलिए उपयोगी हो सकता है?

Why can a selectable marker be useful in animal cells?

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B. Transfected cells चुनने के लिएTo select transfected cells

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Animal cell transfection में marker उन cells को चुनने में मदद करता है जिनमें vector गया है। Selection principle समान रहता है। / In animal cell transfection a marker helps select cells that received the vector. The selection principle remains similar.

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Transfection शब्द सामान्यतः किस context में अधिक उपयोग होता है?

The term transfection is generally used more in which context?

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C. Eukaryotic cells में DNA introductionDNA introduction into eukaryotic cells

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Eukaryotic cells में DNA introduction को अक्सर transfection कहा जाता है। Bacteria में transformation शब्द common है। / DNA introduction into eukaryotic cells is often called transfection. In bacteria transformation is common.

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Transformation और transfection का common idea क्या है?

What is the common idea of transformation and transfection?

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D. External DNA को cell में पहुँचानाDelivering external DNA into a cell

Explanation

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दोनों methods external genetic material को cells में पहुँचाने से जुड़े हैं। Terms host type के अनुसार बदल सकते हैं। / Both methods are related to delivering external genetic material into cells. Terms can change with host type.

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Competent host selection में biosafety क्यों जरूरी है?

Why is biosafety important in competent host selection?

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A. Safe handling और containment के लिएFor safe handling and containment

Explanation

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Genetically modified organisms को safe guidelines के अनुसार handle करना चाहिए। Biosafety lab और environment protection से जुड़ी है। / Genetically modified organisms should be handled according to safe guidelines. Biosafety relates to lab and environmental protection.

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Level 31 Competent Host का सबसे जरूरी revision point क्या है?

What is the most important revision point of Level 31 Competent Host?

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B. Host preparation method strain choice और selection तीनों important हैंHost preparation method strain choice and selection are all important

Explanation

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Competent host success preparation strain और selection पर निर्भर करता है। इन्हें transformation workflow में साथ याद रखें। / Competent host success depends on preparation strain and selection. Remember them together in the transformation workflow.

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Transformation workflow का सबसे सही क्रम कौन सा है?

Which is the most correct order of transformation workflow?

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A. Competent cells DNA addition recovery selection

Explanation

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पहले cells competent बनती हैं फिर DNA दिया जाता है और recovery के बाद selection होती है। यह basic workflow है। / Cells are first made competent then DNA is added and selection follows recovery. This is the basic workflow.

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Plasmid DNA add करने के बाद immediate plating क्यों सही नहीं हो सकती?

Why may immediate plating after adding plasmid DNA be unsuitable?

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B. Cells को recovery और marker expression का समय चाहिएCells need time for recovery and marker expression

Explanation

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Recovery time cells को antibiotic resistance marker express करने देता है। इससे selection plate पर survival बढ़ सकता है। / Recovery time lets cells express the antibiotic resistance marker. This can increase survival on selection plates.

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Recovery medium में antibiotic तुरंत न डालने का कारण क्या हो सकता है?

Why may antibiotic not be added immediately in recovery medium?

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C. Cells को resistance marker express करने का समय देने के लिएTo give cells time to express resistance marker

Explanation

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Transformation के बाद cells कमजोर हो सकती हैं। Recovery बिना antibiotic के marker expression और survival में मदद करती है। / Cells can be weak after transformation. Recovery without antibiotic helps marker expression and survival.

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SOC medium किस काम में commonly use हो सकता है?

For what is SOC medium commonly used?

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D. Transformation के बाद recoveryRecovery after transformation

Explanation

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SOC rich recovery medium है जो transformed cells को selection से पहले recover करने में मदद करता है। / SOC is a rich recovery medium that helps transformed cells recover before selection.

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Competent cells को बार-बार freeze-thaw करने से क्या हो सकता है?

What can happen if competent cells are repeatedly frozen and thawed?

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A. Competence और viability घट सकती हैCompetence and viability may decrease

Explanation

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Repeated freeze-thaw competent cells को damage कर सकता है। Aliquots बनाकर use करना बेहतर है। / Repeated freeze-thaw can damage competent cells. Using aliquots is better.

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Competent cells की aliquots बनाने का लाभ क्या है?

What is the benefit of making aliquots of competent cells?

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B. Repeated freeze-thaw से बचनाAvoiding repeated freeze-thaw

Explanation

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Aliquots cells को छोटे हिस्सों में store करते हैं। इससे एक tube बार-बार thaw नहीं करनी पड़ती। / Aliquots store cells in small portions. This avoids thawing the same tube repeatedly.

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Transformation में बहुत लंबा heat shock क्या कर सकता है?

What can a very long heat shock do in transformation?

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C. Cell survival घटा सकता हैIt can reduce cell survival

Explanation

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Heat shock controlled duration में दिया जाता है। बहुत long heat exposure cells को damage कर सकता है। / Heat shock is given for a controlled duration. Very long heat exposure can damage cells.

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Heat shock के बाद ice पर वापस रखने का उद्देश्य क्या है?

What is the purpose of putting cells back on ice after heat shock?

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D. Cells को stabilize करनाTo stabilize cells

Explanation

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Heat shock के बाद cooling cells को stabilize करने में मदद कर सकती है। यह chemical transformation protocol का common part है। / Cooling after heat shock can help stabilize cells. It is a common part of chemical transformation protocols.

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Plasmid और competent cells को gently mix क्यों किया जाता है?

Why are plasmid and competent cells mixed gently?

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A. Cells fragile हो सकती हैंCells can be fragile

Explanation

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Competent cells damage-prone हो सकती हैं। Gentle mixing viability और competence बचाता है। / Competent cells can be prone to damage. Gentle mixing preserves viability and competence.

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Transformation efficiency कम होने का एक practical कारण क्या हो सकता है?

What can be one practical reason for low transformation efficiency?

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B. Old competent cells

Explanation

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Old या poorly stored competent cells कम efficient हो सकती हैं। Fresh high-quality cells transformation बेहतर कर सकती हैं। / Old or poorly stored competent cells can be less efficient. Fresh high-quality cells can improve transformation.

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DNA ligation mixture सीधे transform करने से कभी efficiency क्यों घट सकती है?

Why can transforming DNA ligation mixture directly sometimes reduce efficiency?

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C. Salts या enzymes cells को stress कर सकते हैंSalts or enzymes can stress cells

Explanation

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Ligation mixture में salts और enzymes हो सकते हैं जो cells को affect करें। Clean-up कुछ cases में मदद कर सकता है। / A ligation mixture can contain salts and enzymes that affect cells. Clean-up can help in some cases.

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Electroporation में DNA clean-up कब useful हो सकता है?

When can DNA clean-up be useful in electroporation?

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D. Salt कम करने के लिएTo reduce salt

Explanation

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Electroporation high salt से arcing हो सकती है। DNA clean-up salt और contaminants कम कर सकता है। / High salt can cause arcing in electroporation. DNA clean-up can reduce salt and contaminants.

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Circular plasmid transformation में क्यों लाभकारी हो सकता है?

Why can circular plasmid be beneficial in transformation?

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A. Circular plasmid stable और replicable हो सकता हैCircular plasmid can be stable and replicable

Explanation

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Plasmid vectors सामान्यतः circular DNA होते हैं और host में replicate कर सकते हैं। इसलिए वे cloning में उपयोगी हैं। / Plasmid vectors are usually circular DNA and can replicate in the host. Therefore they are useful in cloning.

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Recombinant plasmid को host में replicate होने के लिए क्या चाहिए?

What is needed for a recombinant plasmid to replicate in host?

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B. Host-compatible origin of replication

Explanation

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Origin of replication host machinery के साथ compatible होना चाहिए। तभी plasmid copies बनेंगी। / The origin of replication should be compatible with host machinery. Only then plasmid copies will form.

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Plasmid का ori host में काम नहीं करता तो क्या होगा?

What happens if plasmid ori does not work in host?

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C. Plasmid maintain नहीं होगाPlasmid will not be maintained

Explanation

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Ori काम न करे तो plasmid replicate नहीं करेगा। इससे transformants stable नहीं रहेंगे। / If ori does not work the plasmid will not replicate. Transformants will not remain stable.

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Transformation experiment में agar plate का काम क्या है?

What is the role of an agar plate in a transformation experiment?

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D. Colonies grow कराने और selection करने के लिएTo grow colonies and perform selection

Explanation

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Agar plate transformed cells को colonies में grow करने देती है। Antibiotic होने पर selection भी होती है। / An agar plate lets transformed cells grow as colonies. With antibiotic selection also occurs.

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Colony का cloning में क्या महत्व है?

What is the importance of a colony in cloning?

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A. एक transformed cell से बनी population हो सकती हैIt can be a population from one transformed cell

Explanation

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Colony एक clone source हो सकती है। इसलिए individual colonies से plasmid या insert check किया जाता है। / A colony can be a source of a clone. Therefore plasmid or insert is checked from individual colonies.

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Colony picking क्यों की जाती है?

Why is colony picking done?

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B. Specific clone को आगे analyze करने के लिएTo analyze a specific clone further

Explanation

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Individual colony pick करके plasmid isolation PCR या screening की जा सकती है। यह clone confirmation step है। / An individual colony can be picked for plasmid isolation PCR or screening. This is a clone confirmation step.

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Colony PCR क्यों उपयोगी है?

Why is colony PCR useful?

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C. Insert presence quickly check करने के लिएTo quickly check insert presence

Explanation

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Colony PCR selected colony में insert की presence का quick test है। यह final sequencing से पहले screening कर सकता है। / Colony PCR is a quick test for insert presence in a selected colony. It can screen before final sequencing.

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Miniprep का उपयोग किसलिए किया जाता है?

What is miniprep used for?

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D. Small culture से plasmid DNA isolate करने के लिएTo isolate plasmid DNA from small culture

Explanation

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Miniprep transformed bacteria से plasmid DNA निकालने की common method है। इसके बाद restriction analysis या sequencing की जा सकती है। / Miniprep is a common method to extract plasmid DNA from transformed bacteria. Restriction analysis or sequencing can follow.

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Isolated plasmid को restriction enzymes से digest क्यों किया जाता है?

Why is isolated plasmid digested with restriction enzymes?

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A. Insert और vector pattern confirm करने के लिएTo confirm insert and vector pattern

Explanation

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Restriction digestion expected bands दिखाकर correct clone का संकेत दे सकता है। यह plasmid confirmation का common तरीका है। / Restriction digestion can show expected bands and indicate the correct clone. It is a common plasmid confirmation method.

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Sequencing कब उपयोगी है?

When is sequencing useful?

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B. Insert sequence और orientation final confirm करने के लिएTo finally confirm insert sequence and orientation

Explanation

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Sequencing clone की exact identity और insert orientation बता सकती है। यह high confidence confirmation देता है। / Sequencing can reveal exact clone identity and insert orientation. It gives high confidence confirmation.

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Transformation में contamination का एक संकेत क्या हो सकता है?

What can be one sign of contamination in transformation?

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C. Negative control पर unexpected coloniesUnexpected colonies on negative control

Explanation

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Negative control में plasmid नहीं होता इसलिए growth expected नहीं होती। Colonies contamination या selection issue दिखा सकती हैं। / Negative control has no plasmid so growth is not expected. Colonies can show contamination or selection issues.

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Old antibiotic plate में antibiotic degrade हो जाए तो क्या हो सकता है?

What can happen if antibiotic is degraded in an old plate?

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D. Background growth बढ़ सकती हैBackground growth can increase

Explanation

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Degraded antibiotic effective selection नहीं करेगा। इससे non-transformed cells भी grow कर सकती हैं। / Degraded antibiotic will not provide effective selection. Non-transformed cells may also grow.

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गलत antibiotic use करने से क्या समस्या हो सकती है?

What problem can occur if the wrong antibiotic is used?

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A. Correct transformants select नहीं होंगेCorrect transformants may not be selected

Explanation

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Antibiotic marker और plate antibiotic match होने चाहिए। गलत antibiotic से selection fail हो सकती है। / The antibiotic marker and plate antibiotic must match. Wrong antibiotic can make selection fail.

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Ampicillin resistance marker वाले plasmid के लिए कौन सी plate suitable है?

Which plate is suitable for a plasmid with an ampicillin resistance marker?

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B. Ampicillin plate

Explanation

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Ampicillin resistance marker cells को ampicillin plate पर grow करने देता है। Marker और antibiotic का match जरूरी है। / An ampicillin resistance marker lets cells grow on ampicillin plates. Matching marker and antibiotic is necessary.

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Kanamycin resistance marker वाले plasmid के लिए कौन सा selection सही है?

Which selection is correct for a plasmid with kanamycin resistance marker?

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C. Kanamycin-containing medium

Explanation

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Kanamycin resistance marker kanamycin medium पर selection देता है। गलत antibiotic selection को fail कर सकता है। / Kanamycin resistance marker gives selection on kanamycin medium. Wrong antibiotic can fail selection.

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Transformation result में satellite colonies किससे जुड़ सकती हैं?

Satellite colonies in a transformation result can be linked with what?

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D. Antibiotic breakdown around resistant colony

Explanation

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कुछ plates पर resistant colonies antibiotic को degrade कर सकती हैं और nearby small sensitive colonies grow कर सकती हैं। इन्हें satellite colonies कह सकते हैं। / On some plates resistant colonies can degrade antibiotic and nearby small sensitive colonies may grow. These can be called satellite colonies.

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Colony count किससे जुड़ा है?

Colony count is related to what?

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A. Transformation efficiency का अनुमानEstimating transformation efficiency

Explanation

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Colony count से transformation success का अनुमान लगाया जा सकता है। Control plates के साथ comparison useful होता है। / Colony count can estimate transformation success. Comparison with control plates is useful.

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High efficiency competent cells कब जरूरी हैं?

When are high-efficiency competent cells needed?

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B. जब DNA amount बहुत कम होWhen DNA amount is very low

Explanation

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Low DNA amount या difficult ligation products के लिए high-efficiency competent cells useful हो सकती हैं। / High-efficiency competent cells can be useful for low DNA amount or difficult ligation products.

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Routine plasmid transformation में किस तरह की cells पर्याप्त हो सकती हैं?

What type of cells may be sufficient for routine plasmid transformation?

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C. Standard chemically competent cells

Explanation

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Routine plasmid transformation में standard competent E coli cells पर्याप्त हो सकती हैं। कठिन libraries के लिए high efficiency cells बेहतर होती हैं। / Standard competent E coli cells may be enough for routine plasmid transformation. High-efficiency cells are better for difficult libraries.

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Library construction में high efficiency competent host क्यों जरूरी हो सकता है?

Why can a high-efficiency competent host be important in library construction?

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D. अधिक independent clones पाने के लिएTo obtain more independent clones

Explanation

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Library में बहुत सारे अलग DNA fragments clone करने होते हैं। High efficiency diversity बचाने में मदद करती है। / A library needs many different DNA fragments to be cloned. High efficiency helps preserve diversity.

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Library diversity का क्या अर्थ है?

What does library diversity mean?

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A. कई अलग-अलग insert clones का प्रतिनिधित्वRepresentation of many different insert clones

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Library diversity का मतलब है कई unique DNA fragments maintain हों। Low transformation efficiency diversity घटा सकती है। / Library diversity means many unique DNA fragments are maintained. Low transformation efficiency can reduce diversity.

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High copy number वाले plasmid में toxic insert से क्या हो सकता है?

What can happen with a toxic insert in a high-copy plasmid?

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B. Host growth प्रभावित हो सकती हैHost growth can be affected

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Toxic insert high copy में ज्यादा burden डाल सकता है। Low-copy vector host survival में मदद कर सकता है। / A toxic insert at high copy can put more burden. A low-copy vector can help host survival.

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Recombinant plasmid loss रोकने के लिए क्या किया जा सकता है?

What can be done to prevent recombinant plasmid loss?

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C. Selection antibiotic maintain किया जा सकता हैSelection antibiotic can be maintained

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Selection antibiotic plasmid-containing cells को growth advantage देता है। इससे plasmid loss कम हो सकता है। / Selection antibiotic gives growth advantage to plasmid-containing cells. This can reduce plasmid loss.

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Expression host में plasmid और protein production दोनों के लिए क्या जरूरी है?

What is needed for both plasmid and protein production in an expression host?

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D. Compatible vector और suitable expression conditionsCompatible vector and suitable expression conditions

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Expression host को vector maintain करना और gene express करना दोनों चाहिए। Conditions protein yield और folding को प्रभावित करती हैं। / An expression host must maintain the vector and express the gene. Conditions affect protein yield and folding.

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अगर host में rare codons के लिए tRNA कम हो तो क्या हो सकता है?

If a host has fewer tRNAs for rare codons what may happen?

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A. Protein expression प्रभावित हो सकती हैProtein expression may be affected

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Rare codons expression efficiency को प्रभावित कर सकते हैं। Suitable expression host या codon optimization मदद कर सकते हैं। / Rare codons can affect expression efficiency. A suitable expression host or codon optimization can help.

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Bacterial host में eukaryotic protein expression की limitation क्या हो सकती है?

What can be one limitation of expressing eukaryotic protein in bacterial host?

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B. कुछ post-translational modifications नहीं हो सकतेSome post-translational modifications may not occur

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Bacteria eukaryotic cells जैसी सभी modifications नहीं कर पाते। इसलिए complex proteins के लिए other hosts useful हो सकते हैं। / Bacteria cannot perform all modifications like eukaryotic cells. Therefore other hosts can be useful for complex proteins.

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Yeast host bacterial host से किस मामले में अलग है?

How is yeast host different from bacterial host?

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C. Yeast eukaryotic organism हैYeast is a eukaryotic organism

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Yeast eukaryotic host है इसलिए कुछ eukaryotic processing कर सकता है। इसे E coli से अलग host option मानें। / Yeast is a eukaryotic host so it can perform some eukaryotic processing. Treat it as a different host option from E coli.

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Mammalian host cells का एक लाभ क्या है?

What is one advantage of mammalian host cells?

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D. Complex proteins की proper processing में मददHelp in proper processing of complex proteins

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Mammalian cells complex eukaryotic proteins के लिए useful processing दे सकती हैं। लेकिन culture system अधिक जटिल हो सकता है। / Mammalian cells can provide useful processing for complex eukaryotic proteins. But culture systems can be more complex.

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Plant host में selectable marker का उपयोग किसलिए होता है?

Why is a selectable marker used in plant host?

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A. Transformed plant cells चुनने के लिएTo select transformed plant cells

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Plant transformation में marker transformed cells को select करने में मदद करता है। इसके बाद regeneration step हो सकता है। / In plant transformation a marker helps select transformed cells. A regeneration step may follow.

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Plant tissue culture transformation से क्यों जुड़ा होता है?

Why is plant tissue culture linked with transformation?

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B. Transformed cells से plant regenerate करने के लिएTo regenerate plant from transformed cells

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Plant transformation के बाद selected cells से whole plant बनाना पड़ सकता है। Tissue culture regeneration में मदद करता है। / After plant transformation selected cells may need to make a whole plant. Tissue culture helps in regeneration.

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Biosafety level क्यों ध्यान रखा जाता है?

Why is biosafety level considered?

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C. Safe containment और handling के लिएFor safe containment and handling

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Different hosts और constructs के लिए safety needs अलग हो सकती हैं। Biosafety responsible lab practice का भाग है। / Different hosts and constructs can have different safety needs. Biosafety is part of responsible lab practice.

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Genetically modified host को खुले में क्यों नहीं छोड़ना चाहिए?

Why should a genetically modified host not be released openly?

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D. Environmental safety और containment के कारणBecause of environmental safety and containment

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GM hosts को नियमों और containment के अंदर handle करना चाहिए। यह biosafety और environment protection के लिए जरूरी है। / GM hosts should be handled under rules and containment. This is necessary for biosafety and environmental protection.

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Competent host experiment में labelling क्यों जरूरी है?

Why is labelling important in a competent host experiment?

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A. Samples mix-up रोकने के लिएTo prevent sample mix-up

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Proper labelling wrong clone selection और confusion से बचाता है। यह basic lab practice है। / Proper labelling prevents wrong clone selection and confusion. It is a basic lab practice.

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Aseptic technique का लक्ष्य क्या है?

What is the goal of aseptic technique?

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B. Unwanted microbes को रोकनाTo prevent unwanted microbes

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Aseptic technique contamination रोकती है। इससे colonies और results अधिक reliable होते हैं। / Aseptic technique prevents contamination. This makes colonies and results more reliable.

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Colony morphology क्यों देखी जा सकती है?

Why can colony morphology be observed?

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C. Unexpected contamination या mixed colonies पहचानने के लिएTo identify unexpected contamination or mixed colonies

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Colony appearance contamination या अलग strains का संकेत दे सकती है। Insert confirmation के लिए molecular tests चाहिए। / Colony appearance can indicate contamination or different strains. Molecular tests are needed for insert confirmation.

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Transformation success का direct final proof क्या हो सकता है?

What can be direct final proof of transformation success?

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D. Confirmed plasmid या insert analysisConfirmed plasmid or insert analysis

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Growth initial संकेत है लेकिन final confirmation plasmid analysis sequencing या PCR से मिलती है। / Growth is an initial sign but final confirmation comes from plasmid analysis sequencing or PCR.

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Competent host topic में troubleshooting क्यों महत्वपूर्ण है?

Why is troubleshooting important in competent host topic?

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A. Low colonies contamination या wrong selection समझने के लिएTo understand low colonies contamination or wrong selection

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Transformation results में कई practical factors असर डालते हैं। Troubleshooting सही cause पहचानने में मदद करता है। / Many practical factors affect transformation results. Troubleshooting helps identify the correct cause.

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Level 32 का सबसे सुरक्षित exam summary क्या है?

What is the safest exam summary of Level 32?

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B. Competent cells को संभालना recovery selection और confirmation सभी जरूरी हैंHandling competent cells recovery selection and confirmation are all important

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Competent host experiment में cell viability DNA uptake selection और confirmation साथ चलते हैं। इन्हें workflow में याद रखें। / In competent host experiments cell viability DNA uptake selection and confirmation go together. Remember them in workflow.

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किस होस्ट में प्लास्मिड की प्रतिलिपियाँ जल्दी बनने की संभावना अधिक होती है?

In which host are plasmid copies more likely to form quickly?

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B. तेजी से बढ़ने वाली उपयुक्त बैक्टीरियल कोशिकाFast-growing suitable bacterial cell

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तेजी से बढ़ने वाला उपयुक्त होस्ट प्लास्मिड प्रतिकृति के लिए बेहतर होता है। परीक्षा में होस्ट चयन को वृद्धि और संगतता से जोड़ें। / A fast-growing suitable host is better for plasmid replication. In exams link host choice with growth and compatibility.

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किस कारण से ई कोलाई को क्लोनिंग में प्रयोगशाला-अनुकूल होस्ट माना जाता है?

Why is E coli considered a lab-friendly host in cloning?

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A. यह आसानी से उगती है और संभाली जा सकती हैIt grows easily and can be handled

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ई कोलाई सरल conditions में तेजी से बढ़ती है। यह प्लास्मिड क्लोनिंग के लिए सामान्य होस्ट है। / E coli grows fast under simple conditions. It is a common host for plasmid cloning.

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यदि किसी वेक्टर का ओरी होस्ट में काम नहीं करता तो क्या होगा?

What will happen if a vector ori does not work in a host?

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A. प्लास्मिड स्थिर रूप से प्रतिकृति नहीं करेगाPlasmid will not replicate stably

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ओरी को होस्ट की प्रतिकृति प्रणाली के साथ काम करना चाहिए। इसके बिना वेक्टर maintain नहीं होगा। / Ori must work with the host replication system. Without it the vector will not be maintained.

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कौन सा factor competent host चुनने में सबसे अधिक वैज्ञानिक है?

Which factor is most scientific while choosing a competent host?

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C. वेक्टर compatibility और प्रयोग का लक्ष्यVector compatibility and experiment goal

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होस्ट को वेक्टर maintain करना और प्रयोग के लक्ष्य को पूरा करना चाहिए। केवल बाहरी रूप से चयन नहीं किया जाता। / The host should maintain the vector and meet the experiment goal. It is not chosen by appearance alone.

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किस स्थिति में expression host की जरूरत cloning host से अधिक होगी?

In which situation is an expression host needed more than a cloning host?

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B. वांछित प्रोटीन बनवाना हैDesired protein has to be produced

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Expression host gene product बनवाने के लिए चुना जाता है। Cloning host मुख्य रूप से डीएनए copies के लिए होता है। / An expression host is chosen to produce a gene product. A cloning host is mainly for DNA copies.

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किस होस्ट में जटिल यूकैरियोटिक प्रोटीन की processing बेहतर हो सकती है?

In which host can processing of complex eukaryotic proteins be better?

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A. मैमलियन कोशिकाMammalian cell

Explanation

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मैमलियन cells कई यूकैरियोटिक modifications कर सकती हैं। इसलिए complex proteins के लिए वे उपयोगी हो सकती हैं। / Mammalian cells can perform many eukaryotic modifications. Therefore they can be useful for complex proteins.

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यीस्ट होस्ट को बैक्टीरिया से अलग क्यों माना जाता है?

Why is yeast host considered different from bacteria?

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A. यह यूकैरियोटिक होता हैIt is eukaryotic

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यीस्ट यूकैरियोटिक होस्ट है। कुछ यूकैरियोटिक प्रोटीनों के लिए यह बैक्टीरिया से बेहतर हो सकता है। / Yeast is a eukaryotic host. For some eukaryotic proteins it can be better than bacteria.

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किस होस्ट में colony picking सरलता से की जाती है?

In which host is colony picking done easily?

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A. बैक्टीरियल होस्टBacterial host

Explanation

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बैक्टीरिया agar plate पर अलग colonies बना सकते हैं। इससे अलग clone चुनना आसान होता है। / Bacteria can form separate colonies on agar plates. This makes picking individual clones easy.

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अगर transformed colony में plasmid है पर insert नहीं है तो इसे क्या कह सकते हैं?

If a transformed colony has plasmid but no insert what can it be called?

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A. Empty vector colony

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Empty vector में selection marker हो सकता है लेकिन desired insert नहीं होता। इसलिए screening जरूरी है। / An empty vector may have a selection marker but lacks the desired insert. Therefore screening is needed.

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किस कारण selection के बाद भी screening करनी पड़ती है?

Why is screening needed even after selection?

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A. Selection केवल vector uptake दिखा सकती हैSelection may only show vector uptake

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Selection transformed cells चुनती है। Screening बताती है कि desired insert सही है या नहीं। / Selection chooses transformed cells. Screening tells whether the desired insert is correct or not.

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Competent host में reporter gene किस काम आता है?

What is the use of a reporter gene in a competent host?

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A. Signal देकर expression या transformation दिखानाShowing expression or transformation by a signal

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Reporter gene दृश्य या measurable signal दे सकता है। यह screening और expression studies में सहायक है। / A reporter gene can give a visible or measurable signal. It helps in screening and expression studies.

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लैकजेड reporter किस screening से जुड़ा है?

lacZ reporter is linked with which screening?

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A. नीला-सफेद screeningBlue-white screening

Explanation

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लैकजेड activity colony color बदल सकती है। Insert disruption white colony का संकेत दे सकता है। / lacZ activity can change colony color. Insert disruption can indicate a white colony.

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GFP reporter से क्या देखा जा सकता है?

What can be observed with GFP reporter?

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A. फ्लोरेसेंस signalFluorescence signal

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GFP green fluorescence दे सकता है। इसे expression signal के उदाहरण की तरह याद रखें। / GFP can give green fluorescence. Remember it as an example of expression signal.

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किस host feature से recombinant protein टूटने से बच सकता है?

Which host feature can protect recombinant protein from breakdown?

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A. Protease-deficient background

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Protease-deficient host protein degradation कम कर सकता है। Expression experiments में यह उपयोगी होता है। / A protease-deficient host can reduce protein degradation. It is useful in expression experiments.

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Recombination-deficient host का मुख्य लाभ क्या है?

What is the main benefit of a recombination-deficient host?

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A. Cloned insert की stability बढ़ानाIncreasing stability of cloned insert

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Recombination-deficient host unwanted rearrangement घटा सकता है। इससे insert अधिक stable रहता है। / A recombination-deficient host can reduce unwanted rearrangement. This keeps the insert more stable.

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Endonuclease-deficient host क्यों उपयोगी हो सकता है?

Why can an endonuclease-deficient host be useful?

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A. Plasmid DNA degradation घटाने के लिएTo reduce plasmid DNA degradation

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Endonuclease activity कम होने पर plasmid DNA बेहतर quality में मिल सकता है। यह plasmid preparation में मदद करता है। / With lower endonuclease activity plasmid DNA can be obtained in better quality. This helps plasmid preparation.

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अगर host में rare codons के लिए tRNA कम हैं तो क्या प्रभाव होगा?

What will happen if the host has fewer tRNAs for rare codons?

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A. Protein expression प्रभावित हो सकता हैProtein expression can be affected

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Rare codons translation को धीमा कर सकते हैं। Codon optimization या suitable host मदद कर सकते हैं। / Rare codons can slow translation. Codon optimization or a suitable host can help.

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Codon optimization किस उद्देश्य से किया जा सकता है?

For what purpose can codon optimization be done?

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A. Host में protein expression सुधारने के लिएTo improve protein expression in a host

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Codon optimization host-preferred codons का उपयोग कर expression बेहतर कर सकता है। इसे recombinant protein production से जोड़ें। / Codon optimization can improve expression by using host-preferred codons. Link it with recombinant protein production.

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अगर recombinant protein toxic है तो host पर क्या असर हो सकता है?

If a recombinant protein is toxic what effect can it have on the host?

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A. Growth धीमी या cell death हो सकती हैGrowth may slow or cell death may occur

Explanation

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Toxic protein host health को नुकसान पहुँचा सकता है। Controlled expression system उपयोगी हो सकता है। / A toxic protein can harm host health. A controlled expression system can be useful.

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Inducible promoter का उपयोग क्यों किया जाता है?

Why is an inducible promoter used?

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A. Gene expression को control करने के लिएTo control gene expression

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Inducible promoter जरूरत पड़ने पर expression शुरू कराता है। Toxic genes में यह विशेष रूप से उपयोगी हो सकता है। / An inducible promoter starts expression when needed. It can be especially useful for toxic genes.

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Constitutive promoter का सरल अर्थ क्या है?

What is the simple meaning of a constitutive promoter?

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A. Gene लगातार express हो सकता हैGene can be expressed continuously

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Constitutive promoter gene को लगातार express करा सकता है। Toxic gene के लिए सावधानी जरूरी है। / A constitutive promoter can make a gene express continuously. Caution is needed for toxic genes.

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Plasmid burden का अर्थ क्या है?

What does plasmid burden mean?

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A. Plasmid maintain करने से host पर extra loadExtra load on host due to plasmid maintenance

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Plasmid replication और gene expression host resources use करते हैं। इससे growth slow हो सकती है। / Plasmid replication and gene expression use host resources. This can slow growth.

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High-copy plasmid toxic insert के साथ समस्या क्यों दे सकता है?

Why can a high-copy plasmid cause a problem with a toxic insert?

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A. Toxic product अधिक बन सकता हैMore toxic product can be made

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High-copy plasmid से toxic gene dosage बढ़ सकता है। Low-copy vector कभी बेहतर विकल्प हो सकता है। / A high-copy plasmid can increase toxic gene dosage. A low-copy vector can sometimes be a better option.

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Co-transformation का अर्थ क्या है?

What does co-transformation mean?

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A. एक ही host में दो genetic elements डालनाIntroducing two genetic elements into the same host

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Co-transformation में एक host cell दो DNA molecules ले सकती है। Selection design सावधानी से करनी चाहिए। / In co-transformation one host cell can take two DNA molecules. Selection design should be careful.

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Two-plasmid system में दो markers क्यों रखे जाते हैं?

Why are two markers kept in a two-plasmid system?

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A. दोनों plasmids select और maintain करने के लिएTo select and maintain both plasmids

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दो अलग markers दोनों plasmids की उपस्थिति सुनिश्चित करने में मदद करते हैं। इससे co-transformants चुने जा सकते हैं। / Two different markers help ensure presence of both plasmids. This allows selection of co-transformants.

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Plasmid compatibility group कब important होता है?

When is plasmid compatibility group important?

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A. जब दो plasmids साथ रखने होंWhen two plasmids must be maintained together

Explanation

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Same compatibility group के plasmids साथ stable नहीं रह सकते। Multiple plasmid systems में यह जरूरी point है। / Plasmids of the same compatibility group may not remain stable together. This is important in multiple plasmid systems.

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Host range का अर्थ क्या है?

What does host range mean?

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A. कौन से hosts vector को maintain कर सकते हैंWhich hosts can maintain a vector

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Host range बताता है कि vector किन hosts में काम कर सकता है। Broad host range vectors अधिक hosts में उपयोगी होते हैं। / Host range tells in which hosts a vector can work. Broad host range vectors are useful in more hosts.

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Broad host range vector का लाभ क्या है?

What is the benefit of a broad host range vector?

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A. कई host species में काम कर सकता हैIt can work in many host species

Explanation

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Broad host range vector कई bacterial hosts में replicate हो सकता है। यह versatile cloning में मदद करता है। / A broad host range vector can replicate in many bacterial hosts. It helps in versatile cloning.

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Narrow host range vector की limitation क्या है?

What is a limitation of a narrow host range vector?

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A. यह केवल कुछ hosts में काम करता हैIt works only in some hosts

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Narrow host range vector हर host में replicate नहीं करता। इसलिए host selection ध्यान से करनी होती है। / A narrow host range vector does not replicate in every host. Therefore host selection must be careful.

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Selectable marker host-compatible क्यों होना चाहिए?

Why should a selectable marker be host-compatible?

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A. Marker expression और selection काम करने के लिएFor marker expression and selection to work

Explanation

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Marker host में express होना चाहिए और selection condition से match होना चाहिए। तभी transformants चुने जाते हैं। / The marker should express in the host and match the selection condition. Only then transformants are selected.

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Promoter host-compatible क्यों होना चाहिए?

Why should a promoter be host-compatible?

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A. Host machinery उसे पहचान सकेHost machinery can recognize it

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Promoter को host transcription machinery पहचाननी चाहिए। Otherwise gene expression weak या absent हो सकता है। / The host transcription machinery should recognize the promoter. Otherwise gene expression can be weak or absent.

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Bacterial promoter mammalian host में हमेशा क्यों काम नहीं करता?

Why does a bacterial promoter not always work in a mammalian host?

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A. Transcription machinery अलग होती हैTranscription machinery is different

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Different hosts अलग promoters recognize करते हैं। इसलिए expression vector के elements host-specific हो सकते हैं। / Different hosts recognize different promoters. Therefore expression vector elements can be host-specific.

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Plant host में herbicide marker किसलिए useful हो सकता है?

Why can a herbicide marker be useful in a plant host?

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A. Transformed plant cells select करने के लिएTo select transformed plant cells

Explanation

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Plant transformation में selection marker host और culture condition के अनुसार चुना जाता है। Herbicide resistance भी selection में मदद कर सकता है। / In plant transformation the selection marker is chosen according to host and culture condition. Herbicide resistance can also help selection.

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Yeast transformation में selectable marker किस प्रकार का हो सकता है?

What type of selectable marker can be used in yeast transformation?

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A. Nutritional marker या drug resistance markerNutritional marker or drug resistance marker

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Yeast में auxotrophic या drug resistance markers use हो सकते हैं। Marker host genotype पर निर्भर करता है। / Yeast can use auxotrophic or drug resistance markers. The marker depends on host genotype.

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Auxotrophic marker का सरल अर्थ क्या है?

What is the simple meaning of an auxotrophic marker?

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A. Nutrient requirement को selection में उपयोग करनाUsing nutrient requirement in selection

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Auxotrophic host किसी nutrient के बिना grow नहीं करता। Marker growth ability restore कर सकता है। / An auxotrophic host does not grow without a nutrient. A marker can restore growth ability.

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Mammalian cell screening bacterial colony screening से कैसे अलग हो सकती है?

How can mammalian cell screening differ from bacterial colony screening?

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A. Mammalian cells अक्सर culture wells में grow होती हैंMammalian cells often grow in culture wells

Explanation

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Mammalian cells bacterial colonies की तरह simple agar plate colonies नहीं बनातीं। Their culture system is different. / Mammalian cells do not form simple agar plate colonies like bacteria. Their culture system is different.

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Secretory expression system का लाभ क्या हो सकता है?

What can be a benefit of a secretory expression system?

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A. Protein purification आसान हो सकती हैProtein purification can become easier

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यदि protein medium में secreted हो तो purification आसान हो सकती है। यह expression design में useful point है। / If protein is secreted into the medium purification can become easier. This is a useful point in expression design.

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Chaperone proteins expression host में क्यों मदद कर सकते हैं?

Why can chaperone proteins help in an expression host?

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A. Protein folding में सहायता के लिएTo help protein folding

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Chaperones recombinant protein folding में मदद कर सकते हैं। इससे soluble protein yield बेहतर हो सकती है। / Chaperones can help recombinant protein folding. This can improve soluble protein yield.

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Inclusion bodies किसका संकेत हो सकती हैं?

Inclusion bodies can indicate what?

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A. Insoluble protein aggregates

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कुछ expressed proteins insoluble aggregates बना सकते हैं। ऐसे aggregates को inclusion bodies कहते हैं। / Some expressed proteins can form insoluble aggregates. Such aggregates are called inclusion bodies.

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Lower expression temperature किसमें मदद कर सकता है?

Lower expression temperature can help in what?

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A. Protein folding और solubilityProtein folding and solubility

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कम temperature कुछ proteins को बेहतर fold होने में मदद कर सकता है। इससे inclusion bodies कम हो सकती हैं। / Lower temperature can help some proteins fold better. This can reduce inclusion bodies.

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Protein purification tag का मुख्य उपयोग क्या है?

What is the main use of a protein purification tag?

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A. Recombinant protein को पहचानना और purify करनाIdentifying and purifying recombinant protein

Explanation

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His-tag जैसे tags protein purification और detection में मदद करते हैं। यह expression vector design में common है। / Tags like His-tag help in protein purification and detection. This is common in expression vector design.

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Antibiotic resistance marker safety concern क्यों हो सकता है?

Why can an antibiotic resistance marker be a safety concern?

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A. Resistance gene spread रोकना जरूरी हैSpread of resistance gene must be prevented

Explanation

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Antibiotic resistance markers को containment के साथ handle करना चाहिए। Biosafety rules इस risk को manage करते हैं। / Antibiotic resistance markers should be handled with containment. Biosafety rules manage this risk.

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Competent host waste disposal क्यों जरूरी है?

Why is competent host waste disposal necessary?

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A. Modified live cells को safely inactivate करने के लिएTo safely inactivate modified live cells

Explanation

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Modified cells और contaminated materials का proper disposal biosafety के लिए जरूरी है। इसे lab safety से जोड़ें। / Proper disposal of modified cells and contaminated materials is necessary for biosafety. Link it with lab safety.

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Record keeping competent host प्रयोग में क्यों जरूरी है?

Why is record keeping necessary in competent host experiments?

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A. Strain plasmid और result track करने के लिएTo track strain plasmid and result

Explanation

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Records strain plasmid marker और result की traceability रखते हैं। इससे reproducibility बेहतर होती है। / Records maintain traceability of strain plasmid marker and result. This improves reproducibility.

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Strain identity confirm करना क्यों जरूरी है?

Why is it important to confirm strain identity?

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A. गलत strain गलत result दे सकता हैWrong strain can give wrong result

Explanation

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Different strains की properties अलग होती हैं। गलत strain cloning या expression result बदल सकता है। / Different strains have different properties. A wrong strain can change cloning or expression results.

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Plasmid identity confirm करना क्यों जरूरी है?

Why is it important to confirm plasmid identity?

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A. Wrong plasmid desired construct नहीं देगाWrong plasmid will not give desired construct

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Wrong plasmid में desired insert या marker absent हो सकता है। Plasmid verification experiment reliability बढ़ाता है। / A wrong plasmid may lack the desired insert or marker. Plasmid verification improves experiment reliability.

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Competent host में final clone storage क्यों किया जाता है?

Why is final clone storage done in competent host work?

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A. Future use और repeat experiments के लिएFor future use and repeat experiments

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Confirmed clone को stock में preserve किया जा सकता है। इससे future experiments में same clone मिल जाता है। / A confirmed clone can be preserved in stock. This provides the same clone for future experiments.

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Level 33 का सबसे सुरक्षित revision point क्या है?

What is the safest revision point of Level 33?

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A. Host choice cloning expression safety और selection पर निर्भर हैHost choice depends on cloning expression safety and selection

Explanation

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Competent host selection experiment goal पर आधारित होता है। Compatibility selection और biosafety को साथ याद रखें। / Competent host selection is based on experiment goal. Remember compatibility selection and biosafety together.

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Competent host का exam-level summary क्या है?

What is the exam-level summary of a competent host?

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A. उपयुक्त cell जो डीएनए ले और vector maintain करेSuitable cell that takes DNA and maintains vector

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Competent host DNA uptake और vector maintenance दोनों में मदद करता है। यही transformation workflow का core है। / A competent host helps in DNA uptake and vector maintenance. This is the core of the transformation workflow.

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Competent host में transformation efficiency अधिक होने का लाभ क्या है?

What is the benefit of high transformation efficiency in a competent host?

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A. अधिक transformants मिल सकते हैंMore transformants can be obtained

Explanation

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High efficiency cells कम डीएनए से भी अधिक colonies दे सकती हैं। यह library construction में उपयोगी है। / High-efficiency cells can give more colonies even with low DNA. This is useful in library construction.

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Library construction में competent host की भूमिका क्या है?

What is the role of a competent host in library construction?

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A. अलग-अलग DNA fragments वाले vectors maintain करनाMaintaining vectors with different DNA fragments

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Library में अनेक DNA fragments vectors में clone होते हैं। Competent host उन्हें uptake और maintain करने में मदद करता है। / In a library many DNA fragments are cloned into vectors. A competent host helps take up and maintain them.

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Low transformation efficiency library पर क्या प्रभाव डाल सकती है?

What effect can low transformation efficiency have on a library?

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A. कुछ desired clones छूट सकते हैंSome desired clones may be missed

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Low efficiency से सभी fragments transform नहीं हो पाते। इससे library incomplete हो सकती है। / With low efficiency all fragments may not transform. This can make the library incomplete.

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Genomic library में competent host किसलिए जरूरी है?

Why is a competent host needed in a genomic library?

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A. Genome fragments वाले vectors रखने के लिएTo keep vectors carrying genome fragments

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Genomic library में genome fragments vectors में रखे जाते हैं। Competent host इन recombinant vectors को maintain करता है। / In a genomic library genome fragments are kept in vectors. A competent host maintains these recombinant vectors.

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cDNA library में competent host क्या maintain करता है?

What does a competent host maintain in a cDNA library?

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A. cDNA-containing recombinant vectors

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cDNA fragments vectors में clone किए जाते हैं। Competent host उन recombinant vectors को maintain करता है। / cDNA fragments are cloned into vectors. The competent host maintains those recombinant vectors.

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Library screening का मुख्य उद्देश्य क्या है?

What is the main purpose of library screening?

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A. Desired clone पहचाननाIdentifying the desired clone

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Library में अनेक clones होते हैं। Screening desired gene वाले clone को खोजती है। / A library has many clones. Screening finds the clone carrying the desired gene.

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Hybridization screening में probe किससे bind करता है?

In hybridization screening what does a probe bind to?

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A. Complementary target sequence

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Probe complementary sequence से bind करता है। इससे desired DNA वाले clone की पहचान हो सकती है। / A probe binds to a complementary sequence. This can identify a clone carrying desired DNA.

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Colony PCR का उपयोग किसलिए किया जाता है?

What is colony PCR used for?

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A. Selected colony में insert check करने के लिएTo check insert in a selected colony

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Colony PCR insert presence का quick संकेत देता है। Final confirmation के लिए sequencing उपयोगी हो सकती है। / Colony PCR gives a quick indication of insert presence. Sequencing can be useful for final confirmation.

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Master plate का उपयोग क्यों किया जाता है?

Why is a master plate used?

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A. Original colonies को सुरक्षित reference रखनाTo keep original colonies as a safe reference

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Master plate से desired colony बाद में फिर pick की जा सकती है। Screening के दौरान original clone सुरक्षित रहता है। / A desired colony can be picked again from the master plate later. The original clone stays safe during screening.

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Replica plating किस काम में मदद करती है?

What does replica plating help with?

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A. Same colony pattern को नई plates पर transfer करनाTransferring same colony pattern to new plates

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Replica plating colony identity बनाए रखते हुए अलग plates पर testing की सुविधा देती है। यह screening में उपयोगी है। / Replica plating allows testing on different plates while preserving colony identity. It is useful in screening.

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Single colony pick करने का मुख्य कारण क्या है?

What is the main reason to pick a single colony?

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A. Pure clone culture प्राप्त करनाTo obtain a pure clone culture

Explanation

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Single colony से एक clone की population बढ़ाई जा सकती है। इससे analysis अधिक reliable होता है। / A population of one clone can be grown from a single colony. This makes analysis more reliable.

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Mixed colony से क्या समस्या हो सकती है?

What problem can occur with a mixed colony?

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A. गलत plasmid analysis मिल सकता हैWrong plasmid analysis may result

Explanation

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Mixed colonies में अलग clones हो सकते हैं। इससे plasmid result confusing हो सकता है। / Mixed colonies may contain different clones. This can make plasmid results confusing.

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Streaking का उपयोग किसलिए किया जाता है?

What is streaking used for?

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A. Isolated colonies पाने के लिएTo obtain isolated colonies

Explanation

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Streaking dense culture से अलग colonies प्राप्त करने में मदद करता है। Pure clone selection में यह useful है। / Streaking helps obtain separate colonies from a dense culture. It is useful in pure clone selection.

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Miniprep के बाद कौन सा analysis common है?

Which analysis is common after miniprep?

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A. Restriction digestion या sequencingRestriction digestion or sequencing

Explanation

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Miniprep plasmid DNA देता है। फिर restriction digestion या sequencing से clone verify किया जाता है। / Miniprep gives plasmid DNA. Then the clone is verified by restriction digestion or sequencing.

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Restriction digest में expected bands मिलना क्या संकेत देता है?

What does getting expected bands in a restriction digest indicate?

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A. Correct clone हो सकता हैIt may be the correct clone

Explanation

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Expected bands vector map और insert size से match कर सकते हैं। यह correct clone का संकेत है। / Expected bands can match the vector map and insert size. This indicates a correct clone.

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Wrong band pattern क्या बता सकता है?

What can a wrong band pattern indicate?

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A. Wrong clone या rearrangementWrong clone or rearrangement

Explanation

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Wrong pattern insert absence wrong orientation या rearrangement का संकेत हो सकता है। Further confirmation करें। / A wrong pattern can indicate insert absence wrong orientation or rearrangement. Do further confirmation.

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Sequencing final confirmation क्यों देती है?

Why does sequencing give final confirmation?

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A. Insert की exact sequence बता सकती हैIt can tell the exact insert sequence

Explanation

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Sequencing insert identity और mutation status दिखा सकती है। इसलिए यह reliable confirmation है। / Sequencing can show insert identity and mutation status. Therefore it is reliable confirmation.

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Mutation-free insert क्यों जरूरी है?

Why is a mutation-free insert important?

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A. Desired gene function सही रखने के लिएTo keep desired gene function correct

Explanation

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Mutation gene function या protein product बदल सकती है। इसलिए sequencing confirmation उपयोगी है। / A mutation can change gene function or protein product. Therefore sequencing confirmation is useful.

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Spontaneous mutation cloning result को कैसे प्रभावित कर सकती है?

How can spontaneous mutation affect cloning results?

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A. Insert या vector sequence बदल सकती हैIt can change insert or vector sequence

Explanation

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Mutation clone की sequence बदल सकती है। Final construct को verify करना जरूरी है। / A mutation can change the clone sequence. The final construct must be verified.

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Unwanted recombination cloning में क्यों समस्या है?

Why is unwanted recombination a problem in cloning?

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A. Insert rearrangement हो सकता हैInsert rearrangement can occur

Explanation

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Unwanted recombination cloned DNA को बदल सकती है। Recombination-deficient host stability में मदद करता है। / Unwanted recombination can change cloned DNA. A recombination-deficient host helps stability.

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Repeated DNA sequences वाले insert में कौन सा risk अधिक हो सकता है?

What risk can be higher in an insert with repeated DNA sequences?

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A. Recombination से rearrangementRearrangement by recombination

Explanation

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Repeated sequences recombination-prone हो सकती हैं। इसलिए suitable host strain जरूरी है। / Repeated sequences can be recombination-prone. Therefore a suitable host strain is important.

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Toxic insert maintain करने में कौन सी strategy मदद कर सकती है?

Which strategy can help maintain a toxic insert?

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A. Low-copy vector या controlled expressionLow-copy vector or controlled expression

Explanation

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Toxic insert host growth घटा सकता है। Low-copy या controlled expression burden कम कर सकते हैं। / A toxic insert can reduce host growth. Low-copy or controlled expression can reduce burden.

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Leaky expression toxic gene में क्यों problem है?

Why is leaky expression a problem in a toxic gene?

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A. बिना inducer के भी toxic protein बन सकता हैToxic protein can be made even without inducer

Explanation

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Leaky expression host को नुकसान पहुँचा सकता है। Tight promoter control toxic genes में उपयोगी है। / Leaky expression can harm the host. Tight promoter control is useful for toxic genes.

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Promoter control competent host में क्यों उपयोगी है?

Why is promoter control useful in a competent host?

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A. Gene expression regulate करने के लिएTo regulate gene expression

Explanation

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Promoter control high-burden या toxic genes की expression manage करता है। यह expression design का भाग है। / Promoter control manages expression of high-burden or toxic genes. It is part of expression design.

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Induction timing क्यों महत्वपूर्ण है?

Why is induction timing important?

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A. Cells sufficient growth के बाद expression शुरू करेंCells start expression after sufficient growth

Explanation

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बहुत जल्दी induction growth घटा सकती है। सही timing protein yield और cell health में मदद करती है। / Very early induction can reduce growth. Proper timing helps protein yield and cell health.

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Lower induction temperature कब मदद कर सकता है?

When can lower induction temperature help?

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A. Protein solubility और folding सुधारने मेंIn improving protein solubility and folding

Explanation

Simple Explanation

कम temperature कुछ proteins को बेहतर fold होने में मदद करता है। इससे insoluble aggregates कम हो सकते हैं। / Lower temperature helps some proteins fold better. This can reduce insoluble aggregates.

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Periplasmic expression क्यों उपयोगी हो सकता है?

Why can periplasmic expression be useful?

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A. कुछ proteins की folding में मदद कर सकता हैIt can help folding of some proteins

Explanation

Simple Explanation

Periplasm का environment कुछ proteins के folding में मदद कर सकता है। यह bacterial expression strategy है। / The periplasm environment can help folding of some proteins. It is a bacterial expression strategy.

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Secretion signal क्यों जोड़ा जा सकता है?

Why can a secretion signal be added?

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A. Protein को specific location या medium में भेजने के लिएTo send protein to a specific location or medium

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Secretion signal protein targeting में मदद करता है। इससे purification या folding में लाभ मिल सकता है। / A secretion signal helps protein targeting. This can benefit purification or folding.

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Protease activity expression host में क्यों problem हो सकती है?

Why can protease activity be a problem in an expression host?

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A. Recombinant protein degrade कर सकती हैIt can degrade recombinant protein

Explanation

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Proteases expressed protein को तोड़ सकते हैं। Protease-deficient host yield बचाने में मदद करता है। / Proteases can break down expressed protein. A protease-deficient host helps protect yield.

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Disulfide bond वाले proteins के लिए क्या जरूरी हो सकता है?

What may be needed for proteins with disulfide bonds?

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A. Proper folding environment

Explanation

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Disulfide bonds वाली proteins को सही folding environment चाहिए। Suitable host compartment या strain मदद कर सकता है। / Proteins with disulfide bonds need a proper folding environment. A suitable host compartment or strain can help.

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Soluble protein expression सुधारने का एक तरीका क्या हो सकता है?

What can be one way to improve soluble protein expression?

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A. Lower temperature या chaperone supportLower temperature or chaperone support

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Lower temperature और chaperones folding में मदद कर सकते हैं। इससे soluble protein yield बेहतर हो सकती है। / Lower temperature and chaperones can help folding. This can improve soluble protein yield.

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Autoclaving competent host disposal में क्यों किया जाता है?

Why is autoclaving done in competent host disposal?

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A. Live cells inactivate करने के लिएTo inactivate live cells

Explanation

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Autoclaving biological waste में live microbes को inactivate कर सकता है। यह biosafety disposal का common तरीका है। / Autoclaving can inactivate live microbes in biological waste. It is a common biosafety disposal method.

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Spill management क्यों जरूरी है?

Why is spill management necessary?

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A. Modified cells के accidental spread को रोकने के लिएTo prevent accidental spread of modified cells

Explanation

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Spills को biosafety protocol से manage करना चाहिए। इससे contamination और exposure risk कम होता है। / Spills should be managed by biosafety protocol. This reduces contamination and exposure risk.

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Competent host records में क्या लिखना उपयोगी है?

What is useful to write in competent host records?

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A. Strain plasmid marker और dateStrain plasmid marker and date

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Records traceability बनाए रखते हैं। Strain plasmid marker और date future tracking में मदद करते हैं। / Records maintain traceability. Strain plasmid marker and date help future tracking.

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Reproducibility का अर्थ क्या है?

What does reproducibility mean?

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A. Same conditions में similar results मिलनाGetting similar results under same conditions

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Reproducibility experiment की reliability दिखाती है। Proper controls और records इसमें मदद करते हैं। / Reproducibility shows experiment reliability. Proper controls and records help it.

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Internal control क्यों useful होता है?

Why is an internal control useful?

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A. Procedure सही चल रही है या नहीं देखने के लिएTo see whether the procedure is working correctly

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Controls result interpretation में confidence देते हैं। बिना controls troubleshooting कठिन हो जाती है। / Controls give confidence in result interpretation. Without controls troubleshooting becomes difficult.

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किस result को suspicious माना जाएगा?

Which result will be considered suspicious?

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A. Negative control पर growth होGrowth occurs on negative control

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Negative control growth contamination या selection failure दिखा सकती है। इसे suspicious result माना जाएगा। / Growth on negative control can show contamination or selection failure. It will be considered suspicious.

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Positive control भी fail हो जाए तो क्या संभावना है?

What is likely if even the positive control fails?

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A. Cells या method में problemProblem with cells or method

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Positive control failure competent cells या protocol की समस्या दिखाता है। Troubleshooting में यह key point है। / Positive control failure shows a problem with competent cells or protocol. This is a key point in troubleshooting.

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Test sample fail हो लेकिन positive control work करे तो क्या हो सकता है?

What can be possible if test sample fails but positive control works?

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A. Test DNA या construct problem हो सकती हैTest DNA or construct may have a problem

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Positive control working बताता है कि cells competent हैं। Test DNA quality ligation या marker issue हो सकता है। / A working positive control shows cells are competent. Test DNA quality ligation or marker can be the issue.

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Too many background colonies का कारण क्या हो सकता है?

What can cause too many background colonies?

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A. Weak selection या contaminationWeak selection or contamination

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Background colonies weak antibiotic contamination या empty vector से आ सकती हैं। Screening और controls जरूरी हैं। / Background colonies can come from weak antibiotic contamination or empty vector. Screening and controls are necessary.

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किस कारण transformed colony में insert नहीं हो सकता?

Why may a transformed colony lack insert?

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A. Empty vector self-ligation

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Empty vector marker के कारण selected हो सकता है लेकिन insert नहीं रखता। इसे screening से पहचाना जाता है। / An empty vector can be selected due to the marker but lacks insert. It is identified by screening.

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Satellite colonies किस condition में दिख सकती हैं?

In which condition can satellite colonies appear?

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A. Antibiotic breakdown के आसपास sensitive cells grow करेंSensitive cells grow around antibiotic breakdown

Explanation

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कुछ antibiotics nearby resistant colony के कारण कम effective हो सकते हैं। इससे छोटी satellite colonies दिख सकती हैं। / Some antibiotics can become less effective near resistant colonies. This can produce small satellite colonies.

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Colony morphology देखने का उद्देश्य क्या हो सकता है?

What can be the purpose of observing colony morphology?

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A. Contamination या mixed colonies पहचाननाIdentifying contamination or mixed colonies

Explanation

Simple Explanation

Colony appearance contamination का संकेत दे सकती है। Insert confirmation के लिए molecular tests चाहिए। / Colony appearance can indicate contamination. Molecular tests are needed for insert confirmation.

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Final clone confirmation का मजबूत तरीका क्या है?

What is a strong method for final clone confirmation?

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A. DNA sequencing

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Sequencing insert identity orientation और mutations confirm कर सकती है। इसलिए यह final verification में मजबूत है। / Sequencing can confirm insert identity orientation and mutations. Therefore it is strong for final verification.

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Confirmed clone को glycerol stock में क्यों रखा जाता है?

Why is a confirmed clone kept in glycerol stock?

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A. Long-term preservation के लिएFor long-term preservation

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Glycerol stock clone को future use के लिए preserve करता है। इससे same clone फिर उपयोग हो सकता है। / A glycerol stock preserves the clone for future use. This allows the same clone to be used again.

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Glycerol stock में glycerol क्यों डाला जाता है?

Why is glycerol added in glycerol stock?

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A. Freezing damage से cells की रक्षा के लिएTo protect cells from freezing damage

Explanation

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Glycerol cryoprotectant की तरह काम करता है। यह frozen storage में cells की survival में मदद करता है। / Glycerol works as a cryoprotectant. It helps cell survival during frozen storage.

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Clone stock label में क्या लिखना चाहिए?

What should be written on a clone stock label?

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A. Strain name plasmid marker और dateStrain name plasmid marker and date

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Clear labelling sample mix-up रोकती है। Strain plasmid marker और date future tracking में मदद करते हैं। / Clear labeling prevents sample mix-up. Strain plasmid marker and date help future tracking.

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Level 34 का exam-safe point क्या है?

What is the exam-safe point of Level 34?

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A. Efficiency screening confirmation और troubleshooting जुड़े हैंEfficiency screening confirmation and troubleshooting are connected

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Competent host workflow में uptake selection screening और confirmation जुड़े होते हैं। Controls result को reliable बनाते हैं। / In competent host workflow uptake selection screening and confirmation are connected. Controls make results reliable.

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Competent host lab logic का सही सार क्या है?

What is the correct summary of competent host lab logic?

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A. डीएनए enters host selected colonies screened और confirmed होती हैंDNA enters host selected colonies are screened and confirmed

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Competent host डीएनए uptake करता है। फिर selection screening और confirmation से सही clone चुना जाता है। / A competent host takes up DNA. Then the correct clone is chosen by selection screening and confirmation.

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Competent Host topic की basic definition क्या है?

What is the basic definition of Competent Host topic?

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A. ऐसी cell जो external DNA ले सकेA cell that can take external DNA

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Competent host external DNA uptake करने में सक्षम cell है। इसे transformation से जोड़कर याद करें। / A competent host is a cell capable of external DNA uptake. Remember it with transformation.

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Competence शब्द किस क्षमता को दर्शाता है?

The word competence indicates which ability?

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A. बाहरी डीएनए ग्रहण करने की क्षमताAbility to take external DNA

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Competence DNA uptake ability है। Biotechnology में इसे transformation से जोड़ा जाता है। / Competence is DNA uptake ability. In biotechnology it is linked with transformation.

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Transformation का सबसे सरल अर्थ क्या है?

What is the simplest meaning of transformation?

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A. External DNA का host cell में प्रवेशEntry of external DNA into host cell

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Transformation में external DNA host cell में introduce होता है। Competent cells इस process में उपयोगी होती हैं। / In transformation external DNA is introduced into a host cell. Competent cells are useful in this process.

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Competent host बनने के बाद cell क्या कर सकती है?

After becoming competent what can a cell do?

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A. Plasmid DNA uptake कर सकती हैIt can take up plasmid DNA

Explanation

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Competent cell plasmid या recombinant DNA uptake कर सकती है। यही cloning transformation का आधार है। / A competent cell can take up plasmid or recombinant DNA. This is the basis of cloning transformation.

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Transformed host cell की शुरुआती पहचान कैसे हो सकती है?

How can a transformed host cell be initially identified?

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A. Selectable marker based growth सेBy selectable marker based growth

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Selectable marker transformed cells को selection medium पर grow करने देता है। यह initial identification देता है। / A selectable marker lets transformed cells grow on selection medium. It gives initial identification.

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Recombinant clone confirm करने के लिए क्या जरूरी है?

What is needed to confirm a recombinant clone?

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A. Screening या molecular confirmationScreening or molecular confirmation

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Selection केवल vector uptake दिखा सकती है। Insert confirmation के लिए PCR digest या sequencing उपयोगी हैं। / Selection may only show vector uptake. PCR digest or sequencing are useful for insert confirmation.

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Chemical competence method का सही pair कौन सा है?

Which pair is correct for chemical competence method?

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A. Calcium chloride और heat shockCalcium chloride and heat shock

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Chemical transformation में calcium chloride और heat shock commonly use होते हैं। यह bacterial competence का simple pair है। / Chemical transformation commonly uses calcium chloride and heat shock. This is a simple pair for bacterial competence.

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Physical DNA delivery method का उदाहरण कौन सा है?

Which is an example of a physical DNA delivery method?

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A. Electroporation

Explanation

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Electroporation electric pulse से DNA uptake बढ़ाता है। इसे physical delivery method मान सकते हैं। / Electroporation uses an electric pulse to increase DNA uptake. It can be considered a physical delivery method.

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Gene gun plant cells में क्या पहुँचाता है?

What does a gene gun deliver into plant cells?

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A. DNA-coated particles

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Gene gun DNA-coated particles को plant cells में पहुंचा सकता है। यह direct DNA delivery method है। / A gene gun can deliver DNA-coated particles into plant cells. It is a direct DNA delivery method.

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Agrobacterium plant transformation में क्यों उपयोगी है?

Why is Agrobacterium useful in plant transformation?

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A. यह plant cells में DNA transfer कर सकता हैIt can transfer DNA into plant cells

Explanation

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Agrobacterium T-DNA transfer ability के कारण plant transformation में उपयोगी है। इसे natural genetic engineer कहा जाता है। / Agrobacterium is useful in plant transformation due to T-DNA transfer ability. It is called a natural genetic engineer.

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Bacterial और plant transformation में एक अंतर क्या है?

What is one difference between bacterial and plant transformation?

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A. Plant transformation में regeneration step हो सकता हैPlant transformation may need regeneration step

Explanation

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Plant transformed cells से whole plant regenerate करना पड़ सकता है। Bacterial colonies plate पर directly grow करती हैं। / Transformed plant cells may need to regenerate a whole plant. Bacterial colonies grow directly on plates.

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Selection और screening दोनों क्यों जरूरी हैं?

Why are both selection and screening needed?

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A. Selection transformants चुनती है और screening recombinants पहचानती हैSelection chooses transformants and screening identifies recombinants

Explanation

Simple Explanation

Selection vector लेने वाली cells चुनती है। Screening desired insert वाले clones पहचानती है। / Selection chooses cells that took the vector. Screening identifies clones with the desired insert.

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Positive control क्यों जरूरी है?

Why is a positive control important?

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A. Cells और method काम कर रहे हैं या नहीं check करने के लिएTo check whether cells and method are working

Explanation

Simple Explanation

Positive control known plasmid से competence और protocol verify करता है। यह troubleshooting में मदद करता है। / A positive control with known plasmid verifies competence and protocol. It helps in troubleshooting.

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Negative control का उद्देश्य क्या है?

What is the purpose of a negative control?

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A. Contamination या background growth check करनाChecking contamination or background growth

Explanation

Simple Explanation

Negative control में plasmid नहीं होता। Growth आने पर contamination या selection problem हो सकती है। / A negative control has no plasmid. Growth can indicate contamination or selection problem.

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No growth मिलने पर हमेशा एक ही कारण क्यों नहीं मानना चाहिए?

Why should no growth not always be assumed to have only one cause?

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A. कई factors जैसे competence DNA और antibiotic असर कर सकते हैंMany factors like competence DNA and antibiotic can affect it

Explanation

Simple Explanation

No growth poor competence wrong antibiotic या DNA issue से हो सकता है। Controls cause पहचानने में मदद करते हैं। / No growth can occur due to poor competence wrong antibiotic or DNA issue. Controls help identify the cause.

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बहुत अधिक background growth क्या दिखा सकती है?

What can too much background growth show?

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A. Weak selection या contaminationWeak selection or contamination

Explanation

Simple Explanation

Background growth weak antibiotic contamination या empty vector से हो सकती है। Screening और controls जरूरी हैं। / Background growth can come from weak antibiotic contamination or empty vector. Screening and controls are needed.

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Host-vector compatibility का best meaning क्या है?

What is the best meaning of host-vector compatibility?

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A. Vector host में replicate और express हो सकेVector can replicate and express in host

Explanation

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Host-vector compatibility में ori marker promoter जैसे elements host में काम करते हैं। यह success के लिए जरूरी है। / In host-vector compatibility elements like ori marker promoter work in the host. This is needed for success.

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Ori compatibility क्यों जरूरी है?

Why is ori compatibility important?

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A. Plasmid replication के लिएFor plasmid replication

Explanation

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Ori host replication machinery से compatible होना चाहिए। Otherwise plasmid copies नहीं बनेंगी। / Ori should be compatible with the host replication machinery. Otherwise plasmid copies will not form.

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Marker compatibility क्यों जरूरी है?

Why is marker compatibility important?

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A. Selection काम करने के लिएFor selection to work

Explanation

Simple Explanation

Marker host में express होना चाहिए और selection condition से match होना चाहिए। तभी transformants चुने जाते हैं। / The marker should express in the host and match the selection condition. Only then transformants are selected.

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Promoter compatibility कब जरूरी है?

When is promoter compatibility necessary?

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A. जब gene expression चाहिएWhen gene expression is needed

Explanation

Simple Explanation

Expression experiment में promoter host machinery द्वारा recognized होना चाहिए। Simple cloning में promoter हमेशा जरूरी नहीं है। / In expression experiments the promoter should be recognized by host machinery. In simple cloning a promoter is not always needed.

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Plasmid burden कैसे घटाया जा सकता है?

How can plasmid burden be reduced?

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A. Low-copy vector या controlled expression सेBy low-copy vector or controlled expression

Explanation

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Low-copy vector और controlled expression host resource load कम कर सकते हैं। Toxic inserts में यह उपयोगी है। / A low-copy vector and controlled expression can reduce host resource load. This is useful for toxic inserts.

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Toxic insert host को कैसे प्रभावित कर सकता है?

How can a toxic insert affect a host?

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A. Host growth धीमी या death हो सकती हैHost growth can slow or death can occur

Explanation

Simple Explanation

Toxic gene product host health को नुकसान पहुँचा सकता है। Controlled expression या suitable host जरूरी हो सकता है। / A toxic gene product can harm host health. Controlled expression or a suitable host may be needed.

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Insert stability किससे प्रभावित हो सकती है?

What can affect insert stability?

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A. Host recombination और copy numberHost recombination and copy number

Explanation

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Recombination और high copy burden insert stability को प्रभावित कर सकते हैं। Suitable host strain helpful हो सकता है। / Recombination and high copy burden can affect insert stability. A suitable host strain can help.

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Recombination-deficient host किस problem को कम कर सकता है?

Which problem can a recombination-deficient host reduce?

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A. Insert rearrangement

Explanation

Simple Explanation

Recombination-deficient host unwanted recombination घटाकर insert stability बढ़ा सकता है। Repeated sequences में यह useful है। / A recombination-deficient host can increase insert stability by reducing unwanted recombination. It is useful for repeated sequences.

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Endonuclease-deficient host plasmid preparation में क्यों उपयोगी है?

Why is an endonuclease-deficient host useful in plasmid preparation?

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A. Plasmid DNA degradation कम हो सकती हैPlasmid DNA degradation can decrease

Explanation

Simple Explanation

Endonuclease activity कम होने पर plasmid DNA quality better हो सकती है। यह cloning host choice में useful point है। / When endonuclease activity is low plasmid DNA quality can be better. This is a useful point in cloning host choice.

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Protease-deficient strain expression host में क्यों उपयोगी है?

Why is a protease-deficient strain useful as an expression host?

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A. Recombinant protein breakdown कम करने के लिएTo reduce recombinant protein breakdown

Explanation

Simple Explanation

Protease कम होने से expressed protein degradation घट सकती है। इससे yield और stability improve हो सकती है। / With less protease expressed protein degradation can decrease. This may improve yield and stability.

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Inclusion bodies से बचने में क्या मदद कर सकता है?

What can help avoid inclusion bodies?

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A. Lower expression temperature या chaperonesLower expression temperature or chaperones

Explanation

Simple Explanation

Lower temperature और chaperones protein folding में मदद कर सकते हैं। इससे insoluble aggregates कम हो सकते हैं। / Lower temperature and chaperones can help protein folding. This can reduce insoluble aggregates.

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Protein purification tag का फायदा क्या है?

What is the advantage of a protein purification tag?

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A. Protein detection और purification आसान करनाMaking protein detection and purification easier

Explanation

Simple Explanation

His tag जैसे tags recombinant protein को identify और purify करने में मदद करते हैं। यह expression vector design में common है। / Tags like His tag help identify and purify recombinant protein. This is common in expression vector design.

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Reporter gene का मुख्य उपयोग क्या है?

What is the main use of a reporter gene?

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A. Expression या transformation signal दिखानाShowing expression or transformation signal

Explanation

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Reporter gene visible या measurable signal दे सकता है। GFP और lacZ common examples हैं। / A reporter gene can provide visible or measurable signal. GFP and lacZ are common examples.

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GFP reporter क्या दिखा सकता है?

What can GFP reporter show?

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A. Fluorescent signal

Explanation

Simple Explanation

GFP green fluorescence signal दे सकता है। इससे gene expression या transformation की जानकारी मिल सकती है। / GFP can give a green fluorescence signal. It can give information about gene expression or transformation.

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lacZ reporter का एक उपयोग क्या है?

What is one use of lacZ reporter?

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A. Blue-white screening

Explanation

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lacZ activity colony color screening में मदद कर सकती है। Insert disruption white colony दे सकता है। / lacZ activity can help in colony color screening. Insert disruption can give white colony.

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Colony color से क्या पता चल सकता है?

What can colony color indicate?

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A. Screening result

Explanation

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Colony color screening marker के आधार पर recombinant status का संकेत दे सकता है। Exact sequence के लिए sequencing चाहिए। / Colony color can indicate recombinant status based on screening marker. Sequencing is needed for exact sequence.

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Final clone storage क्यों किया जाता है?

Why is final clone storage done?

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A. Future use और repeat experiments के लिएFor future use and repeat experiments

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Confirmed clone को glycerol stock में preserve किया जा सकता है। इससे same clone future में use होता है। / A confirmed clone can be preserved in glycerol stock. This allows the same clone to be used in future.

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Glycerol stock में glycerol का लाभ क्या है?

What is the benefit of glycerol in glycerol stock?

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A. Freezing damage से cells की रक्षाProtecting cells from freezing damage

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Glycerol cryoprotectant की तरह काम करता है। यह frozen storage में cells की survival में मदद करता है। / Glycerol works as a cryoprotectant. It helps cell survival during frozen storage.

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Strain stock label में क्या लिखना जरूरी है?

What is important to write on a strain stock label?

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A. Strain name plasmid date और markerStrain name plasmid date and marker

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Clear labelling sample mix-up रोकती है। Strain plasmid date और marker future tracking में मदद करते हैं। / Clear labeling prevents sample mix-up. Strain plasmid date and marker help future tracking.

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Contamination रोकने का सबसे basic तरीका क्या है?

What is the most basic way to prevent contamination?

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A. Aseptic technique use करनाUsing aseptic technique

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Aseptic technique unwanted microbes को experiment में आने से रोकती है। यह reliable colonies के लिए जरूरी है। / Aseptic technique prevents unwanted microbes from entering the experiment. It is needed for reliable colonies.

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Biosafety cabinet कब उपयोगी हो सकता है?

When can a biosafety cabinet be useful?

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A. Sensitive या contained cell handling मेंIn sensitive or contained cell handling

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Biosafety cabinet contamination और exposure risk घटाने में मदद कर सकता है। Use host और risk level पर निर्भर है। / A biosafety cabinet can reduce contamination and exposure risk. Its use depends on host and risk level.

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GM competent host disposal का safe principle क्या है?

What is the safe principle for disposal of a GM competent host?

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A. Inactivate करके approved waste route से dispose करनाInactivate and dispose through approved waste route

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Genetically modified cells को approved biosafety rules के अनुसार inactivate और dispose करना चाहिए। यह environment protection के लिए जरूरी है। / Genetically modified cells should be inactivated and disposed according to approved biosafety rules. This protects the environment.

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Accidental release क्यों रोका जाता है?

Why is accidental release prevented?

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A. Environmental containment और safety के लिएFor environmental containment and safety

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Modified hosts को controlled lab conditions में रखना चाहिए। Accidental release biosafety concern बन सकता है। / Modified hosts should be kept under controlled lab conditions. Accidental release can become a biosafety concern.

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Documentation क्यों important है?

Why is documentation important?

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A. Traceability और reproducibility के लिएFor traceability and reproducibility

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Documentation बताता है कि कौन सा strain plasmid और condition use हुई। इससे result verify और repeat किया जा सकता है। / Documentation shows which strain plasmid and condition were used. This allows results to be verified and repeated.

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Ethical handling का अर्थ क्या है?

What does ethical handling mean?

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A. Responsible safe और approved useResponsible safe and approved use

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Biotechnology work में safety rules approval और honesty important हैं। Ethical handling responsible science का भाग है। / In biotechnology work safety rules approval and honesty are important. Ethical handling is part of responsible science.

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Result falsification क्यों गलत है?

Why is result falsification wrong?

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A. यह science और safety दोनों को नुकसान देता हैIt harms both science and safety

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गलत results से wrong conclusions और unsafe decisions हो सकते हैं। Scientific honesty जरूरी है। / False results can cause wrong conclusions and unsafe decisions. Scientific honesty is necessary.

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Risk assessment क्यों किया जाता है?

Why is risk assessment done?

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A. Host vector insert और marker की safety समझने के लिएTo understand safety of host vector insert and marker

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Risk assessment तय करता है कि experiment safely कैसे handle होगा। Host insert और marker सभी consider किए जाते हैं। / Risk assessment decides how the experiment will be handled safely. Host insert and marker are all considered.

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Non-pathogenic strain क्यों चुना जाता है?

Why is a non-pathogenic strain chosen?

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A. Safety बढ़ाने के लिएTo increase safety

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Non-pathogenic lab strains safer handling के लिए preferred होते हैं। Biosafety host choice का important factor है। / Non-pathogenic lab strains are preferred for safer handling. Biosafety is an important factor in host choice.

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Auxotrophic strain safety में कैसे मदद कर सकता है?

How can an auxotrophic strain help in safety?

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A. Outside environment में survival कम हो सकता हैSurvival in outside environment may be reduced

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Auxotrophic strains special nutrients पर depend कर सकते हैं। इससे uncontrolled survival कम हो सकती है। / Auxotrophic strains can depend on special nutrients. This can reduce uncontrolled survival.

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Antibiotic resistance marker की जगह alternative marker क्यों सोचा जा सकता है?

Why can an alternative marker be considered instead of antibiotic resistance marker?

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A. Resistance spread concern कम करने के लिएTo reduce resistance spread concern

Explanation

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कुछ systems में antibiotic-free selection बेहतर biosafety option हो सकता है। Marker choice experiment और rules पर निर्भर है। / In some systems antibiotic-free selection can be a better biosafety option. Marker choice depends on experiment and rules.

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Approved protocol follow करना क्यों जरूरी है?

Why is following an approved protocol important?

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A. Safety quality और reproducibility के लिएFor safety quality and reproducibility

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Approved protocols mistakes और safety risks कम करते हैं। वे comparable results पाने में मदद करते हैं। / Approved protocols reduce mistakes and safety risks. They help obtain comparable results.

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Student को Competent Host topic में सबसे पहले क्या याद रखना चाहिए?

What should a student remember first in Competent Host topic?

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A. Competent host external DNA लेने वाली prepared cell हैCompetent host is a prepared cell that takes external DNA

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Basic definition सही हो तो transformation selection और screening समझना आसान होता है। इसे पहले याद करें। / If the basic definition is clear transformation selection and screening become easier. Remember it first.

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Competent Host topic की best revision chain कौन सी है?

Which is the best revision chain for Competent Host topic?

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A. Competence transformation recovery selection screening confirmation

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Competent host workflow DNA uptake से शुरू होकर clone confirmation तक जाता है। इसी chain को revise करें। / The competent host workflow starts with DNA uptake and goes to clone confirmation. Revise this chain.

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Competent Host topic का अंतिम exam-safe summary क्या है?

What is the final exam-safe summary of Competent Host topic?

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A. Competent host DNA uptake करता है और selected transformants से confirmed clones मिलते हैंCompetent host takes DNA and confirmed clones are obtained from selected transformants

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Competent host transformation का आधार है। Selection screening और confirmation से सही recombinant clone चुना जाता है। / Competent host is the basis of transformation. The correct recombinant clone is chosen by selection screening and confirmation.

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सक्षम होस्ट में बाहरी डीएनए प्रवेश कराने से पहले सबसे जरूरी तैयारी क्या है?

What is the most important preparation before introducing external DNA into a competent host?

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A. कोशिका को डीएनए uptake योग्य बनानाMaking the cell able to take up DNA

Explanation

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बाहरी डीएनए तभी आसानी से प्रवेश करता है जब होस्ट सक्षम हो। परीक्षा में competence को transformation की तैयारी मानें। / External DNA enters easily when the host is competent. In exams treat competence as preparation for transformation.

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किस स्थिति में होस्ट को सक्षम नहीं माना जाएगा?

In which condition will a host not be considered competent?

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C. जब वह डीएनए uptake न कर सकेWhen it cannot take up DNA

Explanation

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जो होस्ट बाहरी डीएनए नहीं ले सकता उसे competent नहीं माना जाता। यह topic का basic negative case है। / A host that cannot take up external DNA is not considered competent. This is the basic negative case of the topic.

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सक्षम होस्ट में प्लास्मिड प्रवेश कराने के बाद पहला selection संकेत क्या हो सकता है?

What can be the first selection signal after plasmid entry into a competent host?

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A. एंटीबायोटिक plate पर colony growthColony growth on antibiotic plate

Explanation

Simple Explanation

Antibiotic plate पर growth resistance marker का शुरुआती संकेत देती है। Insert confirmation के लिए अलग screening चाहिए। / Growth on an antibiotic plate gives an initial sign of a resistance marker. Separate screening is needed for insert confirmation.

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अगर plasmid में selectable marker नहीं है तो selection में क्या समस्या होगी?

What problem occurs in selection if a plasmid lacks a selectable marker?

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A. Transformants पहचानना कठिन होगाIdentifying transformants will be difficult

Explanation

Simple Explanation

Selectable marker transformed cells को पहचानने में मदद करता है। Marker न हो तो selection clear नहीं होती। / A selectable marker helps identify transformed cells. Without a marker selection is not clear.

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सक्षम होस्ट में plasmid के origin का मुख्य काम क्या है?

What is the main role of plasmid origin in a competent host?

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A. प्लास्मिड प्रतिकृति शुरू करानाStarting plasmid replication

Explanation

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Origin of replication plasmid copies बनाने के लिए जरूरी है। यह host compatibility से जुड़ा होता है। / The origin of replication is needed to make plasmid copies. It is linked with host compatibility.

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यदि vector का marker host में express नहीं होता तो क्या होगा?

What happens if a vector marker does not express in the host?

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A. Selection सही तरह काम नहीं करेगीSelection will not work properly

Explanation

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Marker को host में express होना चाहिए ताकि transformed cells चुनी जा सकें। Marker compatibility exam में important है। / The marker must express in the host so transformed cells can be selected. Marker compatibility is important in exams.

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Competent host में transformation के बाद recovery period क्यों रखा जाता है?

Why is a recovery period kept after transformation in a competent host?

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A. कोशिका को marker express करने और stress से उबरने के लिएTo let the cell express marker and recover from stress

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Transformation treatment cells को stress दे सकता है। Recovery marker expression और survival में मदद करती है। / Transformation treatment can stress cells. Recovery helps marker expression and survival.

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सक्षम होस्ट में colony बनने का सबसे सही अर्थ क्या है?

What is the most correct meaning of colony formation in a competent host?

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A. एक transformed cell की बढ़ी हुई populationA grown population from one transformed cell

Explanation

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Colony आमतौर पर एक cell से बढ़ी population हो सकती है। इसलिए single colony clone analysis में काम आती है। / A colony can generally be a population grown from one cell. Therefore single colonies are useful in clone analysis.

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सक्षम होस्ट प्रयोग में single colony क्यों पसंद की जाती है?

Why is a single colony preferred in a competent host experiment?

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A. Pure clone culture पाने के लिएTo obtain a pure clone culture

Explanation

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Single colony से एक clone की culture मिलती है। Mixed colonies result को confuse कर सकती हैं। / A single colony gives a culture of one clone. Mixed colonies can confuse results.

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Competent host में plasmid uptake और insert presence में क्या अंतर है?

What is the difference between plasmid uptake and insert presence in a competent host?

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A. Uptake vector entry है और insert presence recombinant confirmation हैUptake is vector entry and insert presence is recombinant confirmation

Explanation

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Selection plasmid uptake दिखा सकती है लेकिन insert presence नहीं। Recombinant confirmation के लिए screening चाहिए। / Selection can show plasmid uptake but not insert presence. Screening is needed for recombinant confirmation.

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अगर antibiotic plate पर सभी cells grow कर रही हैं तो क्या समस्या हो सकती है?

If all cells are growing on an antibiotic plate what problem may exist?

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A. Selection कमजोर या antibiotic ineffective हो सकता हैSelection may be weak or antibiotic ineffective

Explanation

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सभी cells की growth weak selection या contamination का संकेत हो सकती है। Control plates से कारण समझें। / Growth of all cells can indicate weak selection or contamination. Use control plates to understand the cause.

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सक्षम होस्ट में negative control का best result क्या होना चाहिए?

What should be the best result of a negative control in competent host work?

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A. Selection plate पर no growthNo growth on selection plate

Explanation

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Negative control में plasmid नहीं होता। Selection plate पर growth न होना expected result है। / A negative control has no plasmid. No growth on a selection plate is the expected result.

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Positive control में known plasmid क्यों प्रयोग किया जाता है?

Why is a known plasmid used in a positive control?

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A. Competent cells और method check करने के लिएTo check competent cells and method

Explanation

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Known plasmid transformation system की working दिखाता है। इससे failure का कारण पहचानना आसान होता है। / A known plasmid shows whether the transformation system works. This makes failure diagnosis easier.

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किस कारण competent cells की efficiency storage के दौरान घट सकती है?

Why can the efficiency of competent cells decrease during storage?

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A. गलत temperature या repeated thawingWrong temperature or repeated thawing

Explanation

Simple Explanation

Poor storage और repeated freeze-thaw cells को नुकसान पहुँचा सकते हैं। Aliquots efficiency बचाने में मदद करते हैं। / Poor storage and repeated freeze-thaw can damage cells. Aliquots help preserve efficiency.

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Transformation में gentle mixing क्यों बेहतर है?

Why is gentle mixing better in transformation?

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A. Competent cells को damage से बचाने के लिएTo protect competent cells from damage

Explanation

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Competent cells fragile हो सकती हैं। Gentle handling viability और competence को बचाता है। / Competent cells can be fragile. Gentle handling preserves viability and competence.

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Electroporation में high salt sample क्यों avoid किया जाता है?

Why is a high salt sample avoided in electroporation?

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A. Arcing और cell damage रोकने के लिएTo prevent arcing and cell damage

Explanation

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High salt electric pulse में arcing कर सकता है। Clean low-salt DNA electroporation में बेहतर होता है। / High salt can cause arcing during electric pulse. Clean low-salt DNA is better for electroporation.

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रासायनिक competence में divalent cations का role क्या है?

What is the role of divalent cations in chemical competence?

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A. DNA और cell surface के charge barrier को घटानाReducing charge barrier between DNA and cell surface

Explanation

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Divalent cations DNA uptake को आसान बना सकते हैं। Calcium ions इसका common example हैं। / Divalent cations can make DNA uptake easier. Calcium ions are a common example.

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किस condition में recombinant clone false positive हो सकता है?

In which condition can a recombinant clone be false positive?

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A. Empty vector marker के कारण select हो जाएEmpty vector is selected because of marker

Explanation

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Empty vector marker के कारण selection plate पर grow कर सकता है। Screening false positives हटाने में मदद करती है। / An empty vector can grow on a selection plate due to the marker. Screening helps remove false positives.

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Blue-white screening में white colony अक्सर किसका संकेत हो सकती है?

In blue-white screening what can a white colony often indicate?

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A. Insert disruption वाला recombinant cloneRecombinant clone with insert disruption

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lacZ disruption white colony का संकेत दे सकता है। फिर भी final confirmation molecular method से करें। / lacZ disruption can indicate a white colony. Still final confirmation should be done by molecular methods.

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Blue-white screening में blue colony सामान्यतः क्या बता सकती है?

In blue-white screening what can a blue colony generally indicate?

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A. Non-recombinant vector

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Blue colony अक्सर intact lacZ के कारण non-recombinant vector दिखाती है। Screening result को confirmation से verify करें। / A blue colony often indicates non-recombinant vector due to intact lacZ. Verify screening results by confirmation.

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Competent host में colony PCR किस चीज की quick जाँच कर सकता है?

What can colony PCR quickly check in a competent host?

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A. Target insert की उपस्थितिPresence of target insert

Explanation

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Colony PCR selected colony में insert presence का quick test है। Final sequence check के लिए sequencing बेहतर है। / Colony PCR is a quick test for insert presence in a selected colony. Sequencing is better for final sequence check.

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Restriction analysis competent host work में क्यों किया जाता है?

Why is restriction analysis done in competent host work?

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A. Plasmid pattern और insert size check करने के लिएTo check plasmid pattern and insert size

Explanation

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Restriction digest expected band pattern दे सकता है। यह clone confirmation में उपयोगी है। / Restriction digest can give an expected band pattern. It is useful in clone confirmation.

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Sequencing competent host से मिले clone में क्या confirm कर सकती है?

What can sequencing confirm in a clone obtained from a competent host?

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A. Insert की exact sequenceExact sequence of insert

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Sequencing exact sequence और mutation status बता सकती है। यह final confirmation के लिए मजबूत method है। / Sequencing can show exact sequence and mutation status. It is a strong method for final confirmation.

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सक्षम होस्ट में plasmid stability किससे बढ़ सकती है?

What can increase plasmid stability in a competent host?

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A. उचित selection pressureProper selection pressure

Explanation

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Selection pressure plasmid-containing cells को बनाए रखता है। इससे plasmid loss कम हो सकता है। / Selection pressure maintains plasmid-containing cells. This can reduce plasmid loss.

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अगर selection pressure न रहे तो transformed culture में क्या हो सकता है?

What can happen in a transformed culture if selection pressure is absent?

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A. Plasmid loss हो सकता हैPlasmid loss can occur

Explanation

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Selection न हो तो कुछ cells plasmid खो सकती हैं। Maintenance के लिए suitable selection उपयोगी है। / Without selection some cells can lose the plasmid. Suitable selection is useful for maintenance.

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Competent host में high copy plasmid का possible drawback क्या है?

What is a possible drawback of a high copy plasmid in a competent host?

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A. Metabolic burden बढ़ सकता हैMetabolic burden can increase

Explanation

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High copy plasmid host resources पर extra load डाल सकता है। Toxic inserts में यह problem बढ़ सकती है। / A high copy plasmid can put extra load on host resources. This problem can increase with toxic inserts.

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Competent host में low copy plasmid कब बेहतर हो सकता है?

When can a low copy plasmid be better in a competent host?

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A. Toxic या unstable insert के लिएFor toxic or unstable insert

Explanation

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Low copy vector host burden कम कर सकता है। यह toxic या unstable inserts को maintain करने में मदद कर सकता है। / A low copy vector can reduce host burden. It can help maintain toxic or unstable inserts.

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Recombination-prone insert के लिए किस प्रकार का host उपयोगी हो सकता है?

Which type of host can be useful for a recombination-prone insert?

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A. Recombination-deficient host

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Recombination-deficient host rearrangement risk घटा सकता है। Repeated sequences वाले inserts में यह उपयोगी है। / A recombination-deficient host can reduce rearrangement risk. It is useful for inserts with repeated sequences.

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Endonuclease activity कम होने से plasmid preparation में क्या लाभ हो सकता है?

What benefit can low endonuclease activity give in plasmid preparation?

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A. Plasmid DNA degradation कम हो सकती हैPlasmid DNA degradation can decrease

Explanation

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Endonuclease-deficient host plasmid quality बेहतर रख सकता है। यह cloning strain का useful feature है। / An endonuclease-deficient host can keep plasmid quality better. This is a useful feature of cloning strains.

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Expression host में protease कम होना क्यों लाभकारी है?

Why is low protease activity beneficial in an expression host?

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A. Recombinant protein breakdown कम होगाRecombinant protein breakdown will decrease

Explanation

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Proteases expressed protein को degrade कर सकते हैं। Protease-deficient host protein stability बढ़ा सकता है। / Proteases can degrade expressed protein. A protease-deficient host can increase protein stability.

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Protein expression में inclusion bodies बनने का मुख्य कारण क्या हो सकता है?

What can be a main reason for inclusion body formation during protein expression?

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A. Protein misfolding और aggregationProtein misfolding and aggregation

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Misfolded proteins insoluble aggregates बना सकते हैं। Lower temperature और chaperones मदद कर सकते हैं। / Misfolded proteins can form insoluble aggregates. Lower temperature and chaperones can help.

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Chaperone proteins expression host में किसलिए उपयोगी हैं?

Why are chaperone proteins useful in an expression host?

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A. Protein folding में सहायता के लिएTo help protein folding

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Chaperones protein folding में मदद करते हैं। इससे soluble protein yield बेहतर हो सकती है। / Chaperones help protein folding. This can improve soluble protein yield.

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Lower expression temperature किस result को सुधार सकता है?

Lower expression temperature can improve which result?

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A. Protein solubility

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कम temperature कुछ proteins को properly fold होने में मदद कर सकता है। इससे soluble fraction बढ़ सकती है। / Lower temperature can help some proteins fold properly. This can increase the soluble fraction.

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Plant transformation में regeneration step क्यों जरूरी हो सकता है?

Why can a regeneration step be needed in plant transformation?

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A. Transformed cell से पूरा plant बनाने के लिएTo make a whole plant from a transformed cell

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Plant cells को transformed होने के बाद whole plant में regenerate करना पड़ सकता है। यह bacteria से अलग feature है। / Plant cells may need to regenerate into a whole plant after transformation. This is different from bacteria.

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Agrobacterium को plant biotechnology में natural genetic engineer क्यों कहा जाता है?

Why is Agrobacterium called a natural genetic engineer in plant biotechnology?

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A. क्योंकि यह plant cells में DNA transfer कर सकता हैBecause it can transfer DNA into plant cells

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Agrobacterium T-DNA transfer की क्षमता रखता है। इसलिए यह plant transformation में important है। / Agrobacterium has T-DNA transfer ability. Therefore it is important in plant transformation.

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Animal cells में DNA introduction को अक्सर क्या कहा जाता है?

What is DNA introduction into animal cells often called?

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A. Transfection

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Animal और other eukaryotic cells में DNA introduction को transfection कहा जाता है। Bacteria में transformation term common है। / DNA introduction into animal and other eukaryotic cells is called transfection. In bacteria transformation is common.

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Yeast host का एक advantage क्या है?

What is one advantage of a yeast host?

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A. कुछ eukaryotic processing कर सकता हैIt can perform some eukaryotic processing

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Yeast एक eukaryotic host है। कुछ eukaryotic proteins के लिए यह bacterial host से बेहतर हो सकता है। / Yeast is a eukaryotic host. It can be better than bacterial hosts for some eukaryotic proteins.

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Mammalian host cell कब चुनना सही हो सकता है?

When can choosing a mammalian host cell be appropriate?

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A. Complex eukaryotic protein processing चाहिएComplex eukaryotic protein processing is needed

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Mammalian cells complex proteins की processing में मदद कर सकती हैं। लेकिन उनका culture system जटिल हो सकता है। / Mammalian cells can help process complex proteins. But their culture system can be complex.

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Host range का cloning vector के लिए क्या अर्थ है?

What does host range mean for a cloning vector?

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A. वेक्टर किन hosts में काम कर सकता हैIn which hosts the vector can work

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Host range vector की compatibility बताता है। Broad host range vector कई hosts में काम कर सकता है। / Host range indicates vector compatibility. A broad host range vector can work in many hosts.

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Broad host range vector का मुख्य लाभ क्या है?

What is the main advantage of a broad host range vector?

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A. यह कई species में replicate हो सकता हैIt can replicate in many species

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Broad host range vector अधिक host options देता है। यह flexible cloning work में उपयोगी हो सकता है। / A broad host range vector gives more host options. It can be useful in flexible cloning work.

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Promoter compatibility expression host में क्यों जरूरी है?

Why is promoter compatibility necessary in an expression host?

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A. Host transcription machinery promoter को पहचान सकेHost transcription machinery can recognize the promoter

Explanation

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Promoter को host machinery recognize करनी चाहिए। Otherwise gene expression कमजोर या absent हो सकता है। / The promoter must be recognized by host machinery. Otherwise gene expression can be weak or absent.

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Codon bias expression host में क्या असर डाल सकता है?

What effect can codon bias have in an expression host?

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A. Protein yield बदल सकता हैProtein yield can change

Explanation

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Host preferred codons translation efficiency पर असर डालते हैं। Codon optimization expression बढ़ा सकता है। / Host-preferred codons affect translation efficiency. Codon optimization can improve expression.

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Inducible expression system toxic gene के लिए क्यों उपयोगी है?

Why is an inducible expression system useful for a toxic gene?

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A. Expression को जरूरत पड़ने पर चालू करने के लिएTo turn on expression only when needed

Explanation

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Toxic gene का uncontrolled expression host को नुकसान दे सकता है। Inducible system expression control देता है। / Uncontrolled expression of a toxic gene can harm the host. An inducible system gives expression control.

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Constitutive expression किसे कहते हैं?

What is constitutive expression?

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A. Gene का लगातार express होनाContinuous expression of a gene

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Constitutive promoter gene को लगातार express करा सकता है। Toxic genes के लिए यह risky हो सकता है। / A constitutive promoter can express a gene continuously. This can be risky for toxic genes.

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Competent host work में biosafety का मुख्य उद्देश्य क्या है?

What is the main purpose of biosafety in competent host work?

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A. Safe handling और containmentSafe handling and containment

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Modified cells को safe guidelines के अनुसार handle करना चाहिए। Biosafety lab और environment protection से जुड़ी है। / Modified cells should be handled according to safe guidelines. Biosafety relates to lab and environmental protection.

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Genetically modified host को खुले environment में क्यों नहीं छोड़ना चाहिए?

Why should a genetically modified host not be released into the open environment?

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A. Environmental safety के लिए containment जरूरी हैContainment is needed for environmental safety

Explanation

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GM host को controlled conditions में रखना चाहिए। Accidental release biosafety concern बन सकता है। / A GM host should be kept under controlled conditions. Accidental release can become a biosafety concern.

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Competent host waste को inactivate क्यों किया जाता है?

Why is competent host waste inactivated?

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A. Live modified cells को खत्म करने के लिएTo eliminate live modified cells

Explanation

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Biological waste में live modified cells हो सकती हैं। Inactivation safe disposal का हिस्सा है। / Biological waste may contain live modified cells. Inactivation is part of safe disposal.

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Documentation competent host experiments में क्यों जरूरी है?

Why is documentation needed in competent host experiments?

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A. Traceability और reproducibility के लिएFor traceability and reproducibility

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Records strain plasmid marker और result track करते हैं। इससे experiment repeat और verify हो सकता है। / Records track strain plasmid marker and result. This allows the experiment to be repeated and verified.

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Level 36 Competent Host का best revision point क्या है?

What is the best revision point of Level 36 Competent Host?

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A. Competence uptake selection screening और safety linked हैंCompetence uptake selection screening and safety are linked

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Competent host workflow DNA uptake से clone confirmation तक चलता है। Safety और records भी important हैं। / The competent host workflow goes from DNA uptake to clone confirmation. Safety and records are also important.

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Competent host में transformation success किस बात पर निर्भर कर सकती है?

On what can transformation success in a competent host depend?

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A. cell competence और DNA qualityCell competence and DNA quality

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Competence और clean DNA दोनों transformation success में मदद करते हैं। Poor quality DNA efficiency घटा सकता है। / Competence and clean DNA both help transformation success. Poor quality DNA can reduce efficiency.

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Transformation में DNA purity कम होने पर क्या हो सकता है?

What can happen if DNA purity is low in transformation?

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A. Uptake या survival घट सकता हैUptake or survival can decrease

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Impurities competent cells को stress दे सकती हैं। Clean DNA better transformation में मदद करता है। / Impurities can stress competent cells. Clean DNA helps better transformation.

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Competent host में excessive DNA amount क्यों problem हो सकता है?

Why can excessive DNA amount be a problem in a competent host?

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A. Cells stress हो सकती हैंCells can be stressed

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बहुत अधिक DNA या impurities cells पर stress डाल सकते हैं। Optimal DNA amount better होता है। / Too much DNA or impurities can stress cells. An optimal DNA amount is better.

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किस growth phase की cells competence preparation के लिए बेहतर हो सकती हैं?

Which growth phase cells can be better for competence preparation?

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A. Active exponential phase

Explanation

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Active growing cells competence treatment के लिए better respond कर सकती हैं। Overgrown culture efficiency घटा सकता है। / Actively growing cells can respond better to competence treatment. Overgrown culture can reduce efficiency.

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Overgrown culture से competent cells बनाने पर क्या risk है?

What is the risk of making competent cells from an overgrown culture?

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A. Transformation efficiency कम हो सकती हैTransformation efficiency may decrease

Explanation

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Overgrown culture में cells less healthy हो सकती हैं। इससे competence और viability दोनों प्रभावित हो सकते हैं। / Cells in an overgrown culture can be less healthy. This can affect both competence and viability.

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Competent host culture में contamination आने से क्या समस्या होगी?

What problem occurs if contamination enters a competent host culture?

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A. गलत colonies और गलत interpretation मिल सकती हैWrong colonies and wrong interpretation may occur

Explanation

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Contamination result को unreliable बना देती है। Aseptic technique और control plates जरूरी हैं। / Contamination makes results unreliable. Aseptic technique and control plates are necessary.

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Aseptic technique किससे बचाती है?

Aseptic technique protects against what?

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A. Unwanted microbes

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Aseptic technique unwanted microbial entry को रोकती है। इससे colony result reliable होता है। / Aseptic technique prevents unwanted microbial entry. This makes colony results reliable.

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Transformation plate पर अलग-अलग आकार की colonies क्या संकेत दे सकती हैं?

What can different sized colonies on a transformation plate indicate?

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A. Mixed growth या variable clone behaviorMixed growth or variable clone behavior

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Colony size contamination या clone growth difference का संकेत दे सकती है। Confirmation tests जरूरी रहते हैं। / Colony size can indicate contamination or clone growth differences. Confirmation tests remain necessary.

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अगर colony बहुत छोटी और resistant colony के आसपास हो तो क्या हो सकती है?

If a colony is very small and around a resistant colony what can it be?

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A. Satellite colony

Explanation

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Satellite colonies antibiotic breakdown area में grow कर सकती हैं। इन्हें desired transformants समझने से बचें। / Satellite colonies can grow in areas of antibiotic breakdown. Avoid treating them as desired transformants.

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Competent host में colony count अधिक होने का मतलब हमेशा क्या नहीं है?

What does a high colony count in competent host not always mean?

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A. हर colony desired recombinant हैEvery colony is a desired recombinant

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High colony count में empty vector या background भी हो सकते हैं। Screening recombinant status confirm करती है। / A high colony count can include empty vectors or background. Screening confirms recombinant status.

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Competent host में insert orientation क्यों check की जा सकती है?

Why can insert orientation be checked in a competent host?

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A. Correct gene expression या construct design के लिएFor correct gene expression or construct design

Explanation

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Insert wrong orientation में expression या function प्रभावित हो सकता है। Orientation PCR या sequencing से check हो सकती है। / Wrong insert orientation can affect expression or function. Orientation can be checked by PCR or sequencing.

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Directional cloning competent host screening में क्यों मदद कर सकती है?

Why can directional cloning help in competent host screening?

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A. Insert सही orientation में आने की संभावना बढ़ती हैIt increases the chance of correct insert orientation

Explanation

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Directional cloning insert orientation control में मदद करती है। इससे wrong clones कम हो सकते हैं। / Directional cloning helps control insert orientation. This can reduce wrong clones.

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Competent host में self-ligated vector क्यों problem है?

Why is a self-ligated vector a problem in a competent host?

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A. यह marker के कारण select हो सकता है पर insert नहीं रखताIt can be selected due to marker but lacks insert

Explanation

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Self-ligated vector false positives दे सकता है। Insert screening इसे पहचानने में मदद करती है। / A self-ligated vector can give false positives. Insert screening helps identify it.

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Vector dephosphorylation cloning में किसलिए की जा सकती है?

Why can vector dephosphorylation be done in cloning?

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A. Self-ligation कम करने के लिएTo reduce self-ligation

Explanation

Simple Explanation

Dephosphorylation vector self-ligation को घटा सकती है। इससे recombinant colonies की संभावना बढ़ सकती है। / Dephosphorylation can reduce vector self-ligation. This can increase the chance of recombinant colonies.

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Insert-to-vector ratio cloning result को कैसे प्रभावित कर सकता है?

How can insert-to-vector ratio affect cloning results?

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A. Recombinant colony frequency बदल सकती हैRecombinant colony frequency can change

Explanation

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Incorrect ratio self-ligation या low recombinant yield दे सकता है। Balanced ratio cloning success में मदद करता है। / An incorrect ratio can give self-ligation or low recombinant yield. A balanced ratio helps cloning success.

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Competent host में ligation product transform करते समय क्या ध्यान रखना चाहिए?

What should be considered while transforming a ligation product into a competent host?

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A. Salts और enzymes cells को affect कर सकते हैंSalts and enzymes can affect cells

Explanation

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Ligation mix में salts या enzymes हो सकते हैं। कुछ cases में clean-up transformation efficiency सुधार सकता है। / A ligation mix can contain salts or enzymes. In some cases clean-up can improve transformation efficiency.

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Transformation efficiency calculation में colony number क्यों useful है?

Why is colony number useful in transformation efficiency calculation?

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A. यह transformants का estimate देता हैIt gives an estimate of transformants

Explanation

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Colonies count करके transformation success का अनुमान मिलता है। Comparison controls के साथ करें। / Counting colonies gives an estimate of transformation success. Compare with controls.

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Competent host में plasmid size बड़ा होने पर क्या effect हो सकता है?

What effect can a large plasmid size have in a competent host?

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A. Transformation efficiency कम हो सकती हैTransformation efficiency can decrease

Explanation

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Large plasmids छोटे plasmids की तुलना में less efficient transform हो सकते हैं। यह practical factor है। / Large plasmids can transform less efficiently than small plasmids. This is a practical factor.

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कौन सा plasmid transformation के लिए सामान्यतः आसान हो सकता है?

Which plasmid can generally be easier for transformation?

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A. Small clean circular plasmid

Explanation

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Small clean circular plasmid generally better transform हो सकता है। Size और purity important factors हैं। / A small clean circular plasmid can generally transform better. Size and purity are important factors.

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Host strain mutation cloning outcome को कैसे प्रभावित कर सकती है?

How can host strain mutation affect cloning outcome?

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A. Plasmid stability या DNA quality बदल सकती हैPlasmid stability or DNA quality can change

Explanation

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Host mutations recombination restriction या nuclease activity को प्रभावित कर सकती हैं। इसलिए strain choice important है। / Host mutations can affect recombination restriction or nuclease activity. Therefore strain choice is important.

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Cloning strain और expression strain में मुख्य अंतर क्या हो सकता है?

What can be the main difference between a cloning strain and an expression strain?

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A. Cloning strain DNA maintenance के लिए और expression strain protein production के लिए optimized हो सकता हैCloning strain can be optimized for DNA maintenance and expression strain for protein production

Explanation

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Cloning और expression goals अलग होते हैं। Host strain उसी goal के अनुसार चुनी जाती है। / Cloning and expression goals are different. The host strain is chosen according to that goal.

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Protein expression host में rare codon problem कैसे कम की जा सकती है?

How can rare codon problems be reduced in a protein expression host?

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A. Codon optimization या suitable strain सेBy codon optimization or suitable strain

Explanation

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Rare codons translation slow कर सकते हैं। Optimized gene या special expression strain मदद कर सकता है। / Rare codons can slow translation. An optimized gene or special expression strain can help.

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Expression host में promoter leakiness क्यों problem हो सकती है?

Why can promoter leakiness be a problem in an expression host?

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A. Toxic protein बिना induction बन सकता हैToxic protein can be produced without induction

Explanation

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Leaky promoter toxic gene को unwanted express कर सकता है। Tight regulation toxic proteins के लिए बेहतर है। / A leaky promoter can express a toxic gene unwantedly. Tight regulation is better for toxic proteins.

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Induction बहुत जल्दी करने से क्या नुकसान हो सकता है?

What can be the harm of inducing too early?

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A. Host growth कम हो सकती हैHost growth can decrease

Explanation

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Too early induction cells पर burden डाल सकती है। Proper growth stage पर induction बेहतर yield दे सकती है। / Too early induction can burden cells. Induction at the proper growth stage can give better yield.

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Expression host में soluble protein yield सुधारने के लिए क्या किया जा सकता है?

What can be done to improve soluble protein yield in an expression host?

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A. Lower temperature और folding supportLower temperature and folding support

Explanation

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Lower temperature और chaperones folding में मदद कर सकते हैं। इससे soluble protein yield बढ़ सकती है। / Lower temperature and chaperones can help folding. This can increase soluble protein yield.

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Periplasmic targeting bacterial expression में कब useful हो सकता है?

When can periplasmic targeting be useful in bacterial expression?

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A. कुछ proteins की folding या disulfide formation मेंIn folding or disulfide formation of some proteins

Explanation

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Periplasm का environment कुछ proteins के folding में मदद कर सकता है। यह expression strategy है। / The periplasm environment can help folding of some proteins. It is an expression strategy.

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Secreted protein expression का एक practical लाभ क्या है?

What is one practical benefit of secreted protein expression?

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A. Purification आसान हो सकती हैPurification can be easier

Explanation

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Protein medium में secreted हो तो cell lysis कम जरूरत हो सकती है। इससे purification आसान हो सकती है। / If protein is secreted into the medium cell lysis may be less needed. This can make purification easier.

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Protein tag expression construct में क्यों जोड़ा जाता है?

Why is a protein tag added in an expression construct?

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A. Detection और purification आसान करने के लिएTo make detection and purification easier

Explanation

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Protein tag recombinant product को identify और purify करने में मदद करता है। His tag common example है। / A protein tag helps identify and purify the recombinant product. His tag is a common example.

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Reporter gene और selectable marker में मुख्य अंतर क्या है?

What is the main difference between a reporter gene and a selectable marker?

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A. Reporter signal देता है और marker selection देता हैReporter gives signal and marker gives selection

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Reporter visible signal दे सकता है जबकि selectable marker growth selection देता है। दोनों screening strategy में अलग roles रखते हैं। / A reporter can give visible signal while a selectable marker gives growth selection. Both have different roles in screening strategy.

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GFP reporter किस कारण useful है?

Why is GFP reporter useful?

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A. Fluorescence से expression signal मिलता हैFluorescence gives an expression signal

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GFP fluorescence signal दे सकता है। यह reporter gene का common example है। / GFP can give a fluorescence signal. It is a common example of a reporter gene.

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Yeast में nutritional marker किस principle पर काम करता है?

On what principle does a nutritional marker work in yeast?

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A. Nutrient requirement को restore करनाRestoring a nutrient requirement

Explanation

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Auxotrophic yeast किसी nutrient के बिना grow नहीं करता। Marker उस growth ability को restore कर सकता है। / Auxotrophic yeast does not grow without a nutrient. A marker can restore that growth ability.

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Plant host में selectable marker चुनते समय क्या ध्यान रखा जाता है?

What is considered while choosing a selectable marker in a plant host?

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A. Host tissue और culture conditionHost tissue and culture condition

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Plant selection marker system tissue culture conditions से match होना चाहिए। तभी transformed cells चुनी जा सकती हैं। / A plant selection marker system should match tissue culture conditions. Only then transformed cells can be selected.

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Animal cell transfection में selection कब उपयोगी होती है?

When is selection useful in animal cell transfection?

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A. Vector लेने वाली cells चुनने के लिएTo select cells that received the vector

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Selection transfected cells को identify और enrich करने में मदद करती है। Principle bacterial selection जैसा ही है। / Selection helps identify and enrich transfected cells. The principle is similar to bacterial selection.

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Microinjection में competent host concept कैसे लागू होता है?

How does the competent host concept apply in microinjection?

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A. DNA direct cell या nucleus में दिया जाता हैDNA is delivered directly into cell or nucleus

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Microinjection में DNA को directly deliver किया जाता है। यह bacterial chemical transformation से अलग delivery method है। / In microinjection DNA is delivered directly. It is different from bacterial chemical transformation.

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Gene gun method plant cells में किस barrier को bypass करने में मदद कर सकता है?

Gene gun method can help bypass which barrier in plant cells?

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A. Cell wall barrier

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Gene gun DNA-coated particles को force से cells में भेजता है। इससे plant cell wall barrier पार करने में मदद मिलती है। / Gene gun sends DNA-coated particles into cells by force. This helps cross the plant cell wall barrier.

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Protoplast में DNA delivery आसान क्यों हो सकती है?

Why can DNA delivery be easier in a protoplast?

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A. Cell wall हट जाती हैCell wall is removed

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Protoplast plant cell है जिसकी cell wall हटाई गई होती है। इससे DNA entry आसान हो सकती है। / A protoplast is a plant cell with its cell wall removed. This can make DNA entry easier.

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Competent host experiment में master plate क्यों सुरक्षित रखी जाती है?

Why is a master plate kept safe in competent host experiments?

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A. Original clones को फिर से recover करने के लिएTo recover original clones again

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Screening plates से result मिलने के बाद master plate से desired colony pick की जा सकती है। यह clone identity बचाती है। / After getting results from screening plates the desired colony can be picked from the master plate. It preserves clone identity.

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Replica plating का key advantage क्या है?

What is the key advantage of replica plating?

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A. Colony pattern की identity बनाए रखनाMaintaining identity of colony pattern

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Replica plating same colony arrangement को different plates पर test करने देती है। यह screening में useful है। / Replica plating allows the same colony arrangement to be tested on different plates. It is useful in screening.

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Library screening में probe का उपयोग किसलिए होता है?

Why is a probe used in library screening?

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A. Complementary sequence वाले clone को खोजने के लिएTo find a clone with complementary sequence

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Probe target DNA sequence से complementary binding करता है। इससे desired clone identify हो सकता है। / A probe binds complementarily to the target DNA sequence. This can identify the desired clone.

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Competent host में genomic library और cDNA library दोनों में common role क्या है?

What is the common role of competent host in both genomic and cDNA libraries?

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A. Recombinant vectors maintain करनाMaintaining recombinant vectors

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दोनों libraries में DNA fragments vectors में clone होते हैं। Competent host इन vectors को maintain करता है। / In both libraries DNA fragments are cloned into vectors. The competent host maintains these vectors.

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Competent host work में risk assessment क्यों किया जाता है?

Why is risk assessment done in competent host work?

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A. Host vector insert और marker की safety समझने के लिएTo understand safety of host vector insert and marker

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Risk assessment safe handling और containment तय करता है। इसमें host vector insert और marker consider होते हैं। / Risk assessment decides safe handling and containment. Host vector insert and marker are considered.

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Non-pathogenic lab strain क्यों पसंद की जाती है?

Why is a non-pathogenic lab strain preferred?

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A. Safer handling के लिएFor safer handling

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Non-pathogenic strains biosafety risk कम करते हैं। इसलिए educational और routine lab work में इन्हें prefer किया जाता है। / Non-pathogenic strains reduce biosafety risk. Therefore they are preferred in educational and routine lab work.

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Auxotrophic strain containment में कैसे मदद कर सकता है?

How can an auxotrophic strain help in containment?

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A. Outside environment में survival कम हो सकता हैSurvival outside environment may decrease

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Auxotrophic strains special nutrients पर depend कर सकते हैं। इससे uncontrolled survival कम हो सकती है। / Auxotrophic strains can depend on special nutrients. This can reduce uncontrolled survival.

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Antibiotic resistance marker का biosafety concern क्या है?

What is the biosafety concern of an antibiotic resistance marker?

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A. Resistance gene spread रोकना जरूरी हैSpread of resistance gene must be prevented

Explanation

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Resistance markers को containment के साथ handle करना चाहिए। Waste disposal भी safe होना चाहिए। / Resistance markers should be handled with containment. Waste disposal should also be safe.

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Competent host spill को तुरंत manage क्यों करना चाहिए?

Why should a competent host spill be managed immediately?

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A. Accidental spread और contamination रोकने के लिएTo prevent accidental spread and contamination

Explanation

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Spill में live cells हो सकती हैं। Biosafety protocol accidental spread को रोकने में मदद करता है। / A spill may contain live cells. Biosafety protocol helps prevent accidental spread.

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Autoclaving biological waste में क्यों उपयोगी है?

Why is autoclaving useful for biological waste?

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A. Live microbes inactivate करने के लिएTo inactivate live microbes

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Autoclaving heat और pressure से microbes को inactivate कर सकता है। यह safe disposal का common method है। / Autoclaving can inactivate microbes using heat and pressure. It is a common method for safe disposal.

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Clone record में strain और plasmid लिखना क्यों जरूरी है?

Why is it necessary to write strain and plasmid in clone records?

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A. Traceability बनाए रखने के लिएTo maintain traceability

Explanation

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Records गलत sample mix-up रोकते हैं। Strain और plasmid information reproducibility में मदद करती है। / Records prevent wrong sample mix-ups. Strain and plasmid information helps reproducibility.

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Scientific honesty competent host experiments में क्यों जरूरी है?

Why is scientific honesty necessary in competent host experiments?

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A. Correct conclusions और safety decisions के लिएFor correct conclusions and safety decisions

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False results wrong conclusions और unsafe decisions दे सकते हैं। Honest reporting responsible biotechnology का भाग है। / False results can lead to wrong conclusions and unsafe decisions. Honest reporting is part of responsible biotechnology.

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Approved protocol follow करने का मुख्य लाभ क्या है?

What is the main benefit of following an approved protocol?

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A. Safety और reproducibility बढ़ती हैSafety and reproducibility increase

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Approved protocol mistakes और safety risks कम करता है। इससे results comparable हो सकते हैं। / An approved protocol reduces mistakes and safety risks. This can make results comparable.

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Level 37 का exam-safe summary क्या है?

What is the exam-safe summary of Level 37?

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A. Good competent host work में DNA quality controls screening और biosafety साथ चलते हैंGood competent host work combines DNA quality controls screening and biosafety

Explanation

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Transformation success केवल growth नहीं है। Controls screening confirmation और safety भी जरूरी हैं। / Transformation success is not only growth. Controls screening confirmation and safety are also necessary.

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Competent host की सबसे important practical quality क्या है?

What is the most important practical quality of a competent host?

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A. High viability और DNA uptake abilityHigh viability and DNA uptake ability

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Competent host को जीवित रहकर external DNA लेना चाहिए। Viability और competence दोनों जरूरी हैं। / A competent host should stay alive and take external DNA. Both viability and competence are needed.

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Viability कम होने पर transformation result कैसे प्रभावित होगा?

How will transformation result be affected if viability is low?

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A. Colonies कम मिल सकती हैंFewer colonies may be obtained

Explanation

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Dead या weak cells colonies नहीं बनातीं। इसलिए viability transformation success के लिए जरूरी है। / Dead or weak cells do not form colonies. Therefore viability is necessary for transformation success.

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Competence और viability में सही संबंध क्या है?

What is the correct relation between competence and viability?

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A. Cells DNA लें और survive भी करेंCells should take DNA and also survive

Explanation

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केवल DNA uptake काफी नहीं है। Transformed cells को grow भी करना चाहिए। / DNA uptake alone is not enough. Transformed cells should also grow.

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Competent host में heat shock बहुत ज्यादा हो जाए तो क्या होगा?

What happens if heat shock is too strong in a competent host?

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A. Cell survival घट सकता हैCell survival can decrease

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Heat shock controlled होना चाहिए। Excess heat cells को damage कर सकती है। / Heat shock should be controlled. Excess heat can damage cells.

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Chemical transformation में ice incubation किसलिए उपयोगी है?

Why is ice incubation useful in chemical transformation?

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A. Cells stable रखने के लिएTo keep cells stable

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Cold condition competent cells को stable रखती है। Heat shock step को controlled तरीके से दिया जाता है। / Cold condition keeps competent cells stable. The heat shock step is given in a controlled way.

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Competent host में recovery medium rich क्यों हो सकता है?

Why can recovery medium be rich in competent host work?

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A. Stressed cells को recover करने में मदद के लिएTo help stressed cells recover

Explanation

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Rich medium cells को transformation stress से उबरने में मदद करता है। फिर marker expression के बाद selection होती है। / Rich medium helps cells recover from transformation stress. Selection follows after marker expression.

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Antibiotic selection से पहले recovery क्यों दी जाती है?

Why is recovery given before antibiotic selection?

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A. Resistance marker express होने का समय देने के लिएTo give time for resistance marker expression

Explanation

Simple Explanation

Cells को resistance protein बनाने का समय चाहिए। Immediate antibiotic exposure survival घटा सकता है। / Cells need time to make resistance protein. Immediate antibiotic exposure can reduce survival.

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Competent host में wrong antibiotic plate use करने से क्या होगा?

What happens if a wrong antibiotic plate is used in competent host work?

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A. Correct transformants miss हो सकते हैंCorrect transformants may be missed

Explanation

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Marker और antibiotic match होना चाहिए। Wrong plate selection result को गलत बना सकती है। / The marker and antibiotic should match. A wrong plate can make selection results wrong.

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अगर plasmid ampicillin resistant है तो कौन सी plate सही है?

If a plasmid is ampicillin resistant which plate is correct?

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A. Ampicillin plate

Explanation

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Ampicillin resistance marker ampicillin plate पर selection देता है। Marker और antibiotic का match याद रखें। / An ampicillin resistance marker gives selection on an ampicillin plate. Remember marker and antibiotic match.

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Kanamycin marker वाले transformants किस medium पर select होंगे?

Transformants with a kanamycin marker will be selected on which medium?

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A. Kanamycin medium

Explanation

Simple Explanation

Kanamycin resistance gene kanamycin medium पर survival देता है। Wrong antibiotic selection fail कर सकता है। / A kanamycin resistance gene gives survival on kanamycin medium. Wrong antibiotic can fail selection.

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Competent host में no-antibiotic control plate का उपयोग क्या दिखा सकता है?

What can a no-antibiotic control plate show in competent host work?

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A. Cells viable हैं या नहींWhether cells are viable

Explanation

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No-antibiotic plate cell viability check करने में मदद कर सकती है। Selection plate अलग information देती है। / A no-antibiotic plate can help check cell viability. A selection plate gives different information.

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अगर no-antibiotic plate पर growth है लेकिन selection plate पर नहीं तो क्या संभव है?

If there is growth on no-antibiotic plate but not on selection plate what is possible?

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A. Cells alive हैं पर plasmid marker selection नहीं हुआCells are alive but plasmid marker selection did not occur

Explanation

Simple Explanation

No-antibiotic growth viability दिखाती है। Selection plate failure transformation या marker issue दिखा सकता है। / No-antibiotic growth shows viability. Selection plate failure can indicate transformation or marker issue.

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Positive control grow करे लेकिन test sample न grow करे तो क्या संकेत है?

If positive control grows but test sample does not grow what does it indicate?

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A. Test construct या DNA में issue हो सकता हैTest construct or DNA may have an issue

Explanation

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Positive control cells और method को ठीक दिखाता है। Test sample में ligation DNA quality या marker problem हो सकती है। / A positive control shows cells and method are working. The test sample may have ligation DNA quality or marker problems.

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Positive control भी fail हो जाए तो सबसे पहले क्या suspect करेंगे?

If even the positive control fails what should be suspected first?

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A. Competent cells या protocol problemCompetent cells or protocol problem

Explanation

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Positive control failure whole transformation system की problem दिखाता है। Cells protocol या antibiotic plate check करें। / Positive control failure shows a problem in the whole transformation system. Check cells protocol or antibiotic plate.

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Negative control grow करे तो क्या concern होगा?

What concern arises if the negative control grows?

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A. Contamination या selection failureContamination or selection failure

Explanation

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Negative control में plasmid नहीं होता। Growth contamination या weak antibiotic selection का संकेत हो सकती है। / A negative control has no plasmid. Growth can indicate contamination or weak antibiotic selection.

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Competent host work में contamination रोकने के लिए plates कब खोलनी चाहिए?

When should plates be opened to prevent contamination in competent host work?

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A. केवल जरूरत पड़ने पर और कम समय के लिएOnly when needed and for a short time

Explanation

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Plates को लंबे समय तक खुला रखने से contamination बढ़ता है। Short careful handling बेहतर है। / Keeping plates open for long increases contamination. Short careful handling is better.

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Proper labelling किस problem को रोकती है?

What problem does proper labelling prevent?

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A. Sample mix-up

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Labelled tubes और plates confusion कम करते हैं। यह traceability के लिए जरूरी है। / Labelled tubes and plates reduce confusion. This is necessary for traceability.

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Competent host में plasmid map क्यों useful होता है?

Why is a plasmid map useful in competent host work?

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A. Ori marker insert sites और digest pattern समझने के लिएTo understand ori marker insert sites and digest pattern

Explanation

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Plasmid map cloning strategy और confirmation में मदद करता है। इसमें marker ori और restriction sites दिखते हैं। / A plasmid map helps in cloning strategy and confirmation. It shows marker ori and restriction sites.

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MCS का cloning vector में क्या महत्व है?

What is the importance of MCS in a cloning vector?

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A. Insert cloning के लिए कई restriction sites देनाProviding many restriction sites for insert cloning

Explanation

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MCS में कई restriction sites होती हैं जहाँ insert clone किया जा सकता है। यह vector design का important part है। / MCS has many restriction sites where an insert can be cloned. It is an important part of vector design.

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MCS में insert आने से reporter gene क्यों disrupt हो सकता है?

Why can a reporter gene be disrupted when an insert enters the MCS?

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A. MCS reporter gene के अंदर हो सकता हैMCS can be inside the reporter gene

Explanation

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कई vectors में MCS lacZ region में होता है। Insert आने पर reporter activity disrupt हो सकती है। / In many vectors the MCS is in the lacZ region. An insert can disrupt reporter activity.

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Competent host में empty vector और recombinant vector में अंतर कैसे किया जा सकता है?

How can empty vector and recombinant vector be distinguished in a competent host?

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A. Screening methods सेBy screening methods

Explanation

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Screening methods insert presence identify करती हैं। Selection केवल vector uptake दिखा सकती है। / Screening methods identify insert presence. Selection may only show vector uptake.

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Competent host से plasmid miniprep करने का purpose क्या है?

What is the purpose of plasmid miniprep from a competent host?

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A. Plasmid DNA isolate करनाTo isolate plasmid DNA

Explanation

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Miniprep transformed cells से plasmid DNA निकालता है। इसके बाद confirmation tests किए जा सकते हैं। / Miniprep extracts plasmid DNA from transformed cells. Confirmation tests can be done after it.

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Plasmid miniprep के बाद gel electrophoresis क्या दिखा सकता है?

What can gel electrophoresis show after plasmid miniprep?

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A. DNA band pattern

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Gel electrophoresis DNA size या digest band pattern देखने में मदद करता है। यह confirmation का हिस्सा हो सकता है। / Gel electrophoresis helps view DNA size or digest band pattern. It can be part of confirmation.

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Expected restriction bands न मिलें तो क्या करना चाहिए?

What should be done if expected restriction bands are not obtained?

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A. Clone को further verify या re-screen करनाFurther verify or re-screen the clone

Explanation

Simple Explanation

Wrong band pattern wrong clone या rearrangement दिखा सकता है। Further confirmation जरूरी है। / A wrong band pattern can show wrong clone or rearrangement. Further confirmation is necessary.

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Sequencing में mutation मिल जाए तो clone के लिए क्या समस्या हो सकती है?

If a mutation is found in sequencing what problem can it cause for the clone?

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A. Gene function बदल सकता हैGene function can change

Explanation

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Mutation gene product या function को बदल सकती है। इसलिए correct clone चुनना जरूरी है। / A mutation can change gene product or function. Therefore choosing the correct clone is necessary.

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Expression host में plasmid maintain और protein express दोनों के लिए क्या चाहिए?

What is needed for both plasmid maintenance and protein expression in an expression host?

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A. Compatible vector elements

Explanation

Simple Explanation

Ori marker promoter और coding sequence host में काम करने चाहिए। तभी maintenance और expression possible है। / Ori marker promoter and coding sequence should work in the host. Only then maintenance and expression are possible.

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Bacterial host में eukaryotic protein की limitation क्या हो सकती है?

What limitation can a bacterial host have for eukaryotic protein?

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A. कुछ modifications नहीं कर सकताIt cannot perform some modifications

Explanation

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Bacteria सभी eukaryotic post-translational modifications नहीं कर पाते। Complex proteins के लिए eukaryotic host useful हो सकता है। / Bacteria cannot perform all eukaryotic post-translational modifications. A eukaryotic host can be useful for complex proteins.

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Yeast और mammalian host में common advantage क्या हो सकता है?

What can be a common advantage of yeast and mammalian hosts?

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A. Eukaryotic expression features

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दोनों eukaryotic hosts हैं। कुछ eukaryotic protein processing में ये bacteria से बेहतर हो सकते हैं। / Both are eukaryotic hosts. They can be better than bacteria for some eukaryotic protein processing.

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Plant tissue culture competent host context में क्यों जुड़ता है?

Why is plant tissue culture linked in competent host context?

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A. Transformed plant cells से plant regeneration के लिएFor plant regeneration from transformed plant cells

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Plant transformation के बाद selected cells से whole plant बनाना पड़ सकता है। Tissue culture regeneration में help करता है। / After plant transformation selected cells may need to form a whole plant. Tissue culture helps in regeneration.

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Agrobacterium method में modified Ti plasmid क्यों use होता है?

Why is a modified Ti plasmid used in Agrobacterium method?

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A. Desired DNA transfer के लिए vector की तरहAs a vector for desired DNA transfer

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Ti plasmid plant cells में DNA transfer system से जुड़ा है। Modified form desired gene transfer में उपयोगी होता है। / Ti plasmid is linked with DNA transfer system into plant cells. A modified form is useful for desired gene transfer.

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Competent host में library construction के लिए high efficiency क्यों चाहिए?

Why is high efficiency needed for library construction in competent host?

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A. Many independent clones पाने के लिएTo obtain many independent clones

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Library में कई अलग fragments represent होने चाहिए। High efficiency diversity बचाने में मदद करती है। / A library should represent many different fragments. High efficiency helps preserve diversity.

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Library diversity कम होने पर क्या समस्या होगी?

What problem occurs if library diversity is low?

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A. Desired clone missing हो सकता हैDesired clone may be missing

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Low diversity में सभी DNA fragments represented नहीं होते। इससे desired clone मिलना कठिन हो सकता है। / In low diversity all DNA fragments are not represented. This can make finding the desired clone difficult.

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Hybridization probe library screening में किस principle पर काम करता है?

On what principle does a hybridization probe work in library screening?

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A. Complementary base pairing

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Probe target sequence से complementary base pairing करता है। इससे desired clone identify हो सकता है। / A probe pairs complementarily with the target sequence. This can identify the desired clone.

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Colony PCR और sequencing में क्या अंतर है?

What is the difference between colony PCR and sequencing?

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A. PCR presence संकेत देता है और sequencing exact sequence बताती हैPCR indicates presence and sequencing tells exact sequence

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Colony PCR quick screening देता है। Sequencing final detailed confirmation देती है। / Colony PCR gives quick screening. Sequencing gives final detailed confirmation.

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Competent host में glycerol stock क्यों बनाया जाता है?

Why is a glycerol stock made in competent host work?

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A. Confirmed clone को long-term preserve करने के लिएTo preserve a confirmed clone long term

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Glycerol stock confirmed clone को future use के लिए बचाता है। यह clone storage का common तरीका है। / A glycerol stock preserves a confirmed clone for future use. It is a common method of clone storage.

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Glycerol stock में glycerol का role क्या है?

What is the role of glycerol in glycerol stock?

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A. Cryoprotectant की तरह cell survival में मददHelping cell survival as a cryoprotectant

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Glycerol freezing damage से cells को बचाने में मदद करता है। इसलिए strain preservation में use होता है। / Glycerol helps protect cells from freezing damage. Therefore it is used in strain preservation.

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Records में passage number या culture history क्यों लिखी जा सकती है?

Why can passage number or culture history be written in records?

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A. Host stability और reproducibility track करने के लिएTo track host stability and reproducibility

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Culture history strain changes या instability समझने में मदद कर सकती है। Good records reproducibility बढ़ाते हैं। / Culture history can help understand strain changes or instability. Good records improve reproducibility.

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Competent host में plasmid loss detect करने का संकेत क्या हो सकता है?

What can indicate plasmid loss in a competent host?

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A. Selection medium पर growth न होनाNo growth on selection medium

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Plasmid loss होने पर cells resistance marker खो सकती हैं। Selection medium पर growth कम या absent हो सकती है। / With plasmid loss cells may lose the resistance marker. Growth on selection medium can be reduced or absent.

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Competent host में expression burden कम करने के लिए क्या useful हो सकता है?

What can be useful to reduce expression burden in a competent host?

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A. Controlled promoter

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Controlled promoter expression को जरूरत के अनुसार regulate करता है। इससे host burden कम हो सकता है। / A controlled promoter regulates expression according to need. This can reduce host burden.

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Toxic recombinant protein के लिए किस strategy से host survival बेहतर हो सकता है?

Which strategy can improve host survival for a toxic recombinant protein?

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A. Tight induction control

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Tight control toxic protein की unnecessary expression रोकता है। इससे host survival बेहतर हो सकता है। / Tight control prevents unnecessary expression of toxic protein. This can improve host survival.

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Competent host में plasmid copy number और product yield में क्या संबंध हो सकता है?

What relation can exist between plasmid copy number and product yield in a competent host?

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A. Copy number yield और burden दोनों को प्रभावित कर सकता हैCopy number can affect both yield and burden

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High copy yield बढ़ा सकता है लेकिन host burden भी बढ़ सकता है। Balance जरूरी है। / High copy can increase yield but also host burden. Balance is important.

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Host-vector incompatibility का possible result क्या है?

What is a possible result of host-vector incompatibility?

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A. Vector maintain नहीं होगाVector will not be maintained

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Vector elements host में काम नहीं करेंगे तो plasmid stable नहीं रहेगा। Compatibility cloning का key point है। / If vector elements do not work in the host the plasmid will not stay stable. Compatibility is a key point in cloning.

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Competent host में MCS और selectable marker दोनों क्यों जरूरी हो सकते हैं?

Why can both MCS and selectable marker be necessary in a competent host?

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A. MCS insert cloning में और marker selection में मदद करता हैMCS helps insert cloning and marker helps selection

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MCS insert insertion की जगह देता है और marker transformants चुनता है। दोनों vector design में useful हैं। / MCS provides a place for insert insertion and marker selects transformants. Both are useful in vector design.

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Biosafety cabinet का उपयोग किसलिए किया जा सकता है?

What can a biosafety cabinet be used for?

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A. Contained और cleaner handling के लिएFor contained and cleaner handling

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Biosafety cabinet contamination और exposure risk कम करने में मदद कर सकता है। Use risk level पर निर्भर है। / A biosafety cabinet can reduce contamination and exposure risk. Its use depends on risk level.

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GM host disposal में approved route क्यों जरूरी है?

Why is an approved route necessary for GM host disposal?

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A. Environment और safety protect करने के लिएTo protect environment and safety

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GM biological material को rules के अनुसार dispose करना चाहिए। यह accidental release रोकने में मदद करता है। / GM biological material should be disposed according to rules. This helps prevent accidental release.

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Competent host work में ethical reporting क्यों जरूरी है?

Why is ethical reporting necessary in competent host work?

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A. Accurate science और safety के लिएFor accurate science and safety

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Accurate reporting गलत conclusions से बचाती है। Biotechnology में honesty और safety साथ चलते हैं। / Accurate reporting avoids wrong conclusions. Honesty and safety go together in biotechnology.

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Competent host topic में student को controls क्यों याद रखने चाहिए?

Why should a student remember controls in the competent host topic?

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A. Results की सही interpretation के लिएFor correct interpretation of results

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Positive और negative controls transformation result समझने में मदद करते हैं। Troubleshooting में controls बहुत important हैं। / Positive and negative controls help interpret transformation results. Controls are very important in troubleshooting.

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Competent Host topic की exam revision chain कौन सी है?

What is the exam revision chain for Competent Host topic?

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A. Competence transformation recovery selection screening confirmation storage

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Competent host workflow DNA uptake से शुरू होकर confirmed clone storage तक जाता है। इसी chain को revise करें। / The competent host workflow starts with DNA uptake and goes to confirmed clone storage. Revise this chain.

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Level 38 Competent Host का final exam-safe summary क्या है?

What is the final exam-safe summary of Level 38 Competent Host?

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A. सक्षम होस्ट डीएनए लेता है और selection screening से सही clone confirm होता हैA competent host takes DNA and the correct clone is confirmed by selection screening

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Competent host transformation और cloning workflow का core part है। Viability controls confirmation और safety को साथ याद रखें। / A competent host is a core part of transformation and cloning workflow. Remember viability controls confirmation and safety together.

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FAQs

Class 11 Biotechnology Quiz FAQs

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