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

Level 38 • 49/50 questions • 40 seconds per question.

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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

Explanation

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Explanation

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Explanation

Simple Explanation

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

Simple Explanation

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

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

Explanation

Simple Explanation

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

How many questions are in this quiz?

This level is designed for 50 active questions. Currently 49 questions are available for the selected class and difficulty.

Is there a timer in this quiz?

Yes, the timer uses 40 seconds per question for Easy difficulty and shows the total remaining time on the page.

Can I open each question separately?

Yes, every question has its own SEO-friendly page with answer, explanation and related practice links.