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Class 11 Biotechnology Easy Quiz

Level 46 • 47/50 questions • 40 seconds per question.

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Complete digestion का अर्थ क्या है?

What does complete digestion mean?

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A. सभी target sites का cut हो जानाCutting at all target sites

Explanation

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Complete digestion में enzyme सभी recognition sites काटता है। Gel पर expected fragment pattern मिलता है। / In complete digestion the enzyme cuts all recognition sites. The expected fragment pattern appears on gel.

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Partial digestion का एक कारण क्या हो सकता है?

What can be one reason for partial digestion?

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C. कम enzyme या कम incubation timeLow enzyme or short incubation time

Explanation

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कम enzyme या कम समय से सभी sites नहीं कटते। Reaction conditions optimize करनी चाहिए। / Low enzyme or short time may not cut all sites. Reaction conditions should be optimized.

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Star activity restriction enzyme में क्या है?

What is star activity in a restriction enzyme?

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D. normal site के अलावा similar sites पर cuttingCutting at similar sites besides the normal site

Explanation

Simple Explanation

Star activity में enzyme specificity घट सकती है। गलत buffer या excess enzyme इसका कारण बन सकते हैं। / In star activity enzyme specificity can decrease. Wrong buffer or excess enzyme can cause it.

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Star activity से बचने के लिए क्या करना चाहिए?

How can star activity be avoided?

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A. recommended buffer और सही enzyme amount use करेंUse recommended buffer and correct enzyme amount

Explanation

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Recommended conditions enzyme specificity बनाए रखती हैं। Excess enzyme और long incubation avoid करें। / Recommended conditions maintain enzyme specificity. Avoid excess enzyme and long incubation.

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Directional cloning में दो अलग enzymes क्यों उपयोगी होते हैं?

Why are two different enzymes useful in directional cloning?

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C. insert orientation control करने के लिएTo control insert orientation

Explanation

Simple Explanation

दो अलग ends insert को एक दिशा में ligate कराने में मदद कर सकते हैं। इससे wrong orientation कम होता है। / Two different ends can help ligate insert in one direction. This reduces wrong orientation.

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Double digestion में buffer compatibility क्यों जरूरी है?

Why is buffer compatibility important in double digestion?

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D. दोनों enzymes की activity बनाए रखने के लिएTo maintain activity of both enzymes

Explanation

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दो enzymes एक ही buffer में अलग-अलग efficiency दिखा सकते हैं। Compatible buffer digestion success के लिए जरूरी है। / Two enzymes can show different efficiencies in the same buffer. Compatible buffer is necessary for digestion success.

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Sequential digestion कब किया जा सकता है?

When can sequential digestion be done?

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A. जब दो enzymes एक buffer में अच्छे से काम न करेंWhen two enzymes do not work well in one buffer

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Sequential digestion में enzymes अलग-अलग steps में use किए जाते हैं। यह buffer incompatibility में मदद करता है। / In sequential digestion enzymes are used in separate steps. It helps when buffers are incompatible.

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Compatible sticky ends अलग enzymes से भी कैसे बन सकते हैं?

How can compatible sticky ends be produced by different enzymes?

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A. अगर वे same या compatible overhang बनाएंIf they produce same or compatible overhangs

Explanation

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कुछ enzymes अलग sites पहचानते हैं पर compatible overhangs देते हैं। ऐसे ends ligate हो सकते हैं। / Some enzymes recognize different sites but produce compatible overhangs. Such ends can ligate.

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Neoschizomers किसे कहते हैं?

What are neoschizomers?

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B. same recognition sequence पर अलग position में cut करने वाले enzymesEnzymes cutting at different positions within the same recognition sequence

Explanation

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Neoschizomers same site पहचान सकते हैं पर cut position अलग होती है। इससे ends अलग बन सकते हैं। / Neoschizomers can recognize the same site but cut at different positions. This can produce different ends.

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Restriction map का अर्थ क्या है?

What does restriction map mean?

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C. restriction sites की position का mapMap of positions of restriction sites

Explanation

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Restriction map बताता है कि DNA पर enzymes कहाँ cut करेंगे। यह cloning planning में useful है। / A restriction map shows where enzymes will cut DNA. It is useful in cloning planning.

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Diagnostic digestion का उद्देश्य क्या है?

What is the purpose of diagnostic digestion?

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D. clone या insert सही है या नहीं जाँचनाChecking whether clone or insert is correct

Explanation

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Diagnostic digestion expected bands से construct की पुष्टि करता है। यह cloning verification में common है। / Diagnostic digestion confirms a construct using expected bands. It is common in cloning verification.

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Diagnostic digest में expected band pattern मिलना क्या बताता है?

What does getting the expected band pattern in diagnostic digest show?

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A. construct सही हो सकता हैThe construct may be correct

Explanation

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Expected bands vector map के अनुसार correct insert का संकेत देते हैं। Final confirmation के लिए sequencing भी उपयोगी है। / Expected bands indicate the correct insert according to vector map. Sequencing is also useful for final confirmation.

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Unexpected bands restriction digest में क्या संकेत दे सकते हैं?

What can unexpected bands indicate in a restriction digest?

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B. wrong clone या incomplete digestionWrong clone or incomplete digestion

Explanation

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Unexpected bands wrong construct partial digestion या star activity दिखा सकते हैं। Troubleshooting जरूरी है। / Unexpected bands can show wrong construct partial digestion or star activity. Troubleshooting is needed.

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Restriction enzyme unit का अर्थ क्या है?

What does a restriction enzyme unit mean?

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C. defined condition में DNA काटने की activity amountAmount of activity to cut DNA under defined condition

Explanation

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Enzyme units activity बताते हैं। Reaction setup में DNA amount के अनुसार enzyme मात्रा चुनी जाती है। / Enzyme units describe activity. Enzyme amount is chosen according to DNA amount in reaction setup.

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Restriction enzyme बहुत अधिक डालने से क्या risk हो सकता है?

What risk can occur by adding too much restriction enzyme?

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D. star activity या glycerol effectStar activity or glycerol effect

Explanation

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Excess enzyme reaction conditions को बिगाड़ सकता है और star activity बढ़ा सकता है। Recommended amount use करें। / Excess enzyme can disturb reaction conditions and increase star activity. Use recommended amount.

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Restriction enzyme storage buffer में glycerol क्यों होता है?

Why is glycerol present in restriction enzyme storage buffer?

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A. enzyme stability और freezing protection के लिएFor enzyme stability and freezing protection

Explanation

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Glycerol enzyme को freezing damage से बचाता है। लेकिन reaction में बहुत अधिक glycerol avoid किया जाता है। / Glycerol protects enzyme from freezing damage. But too much glycerol in reaction is avoided.

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Restriction digestion में final glycerol concentration अधिक होने से क्या हो सकता है?

What can happen if final glycerol concentration is high in restriction digestion?

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B. star activity बढ़ सकती हैStar activity can increase

Explanation

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बहुत अधिक glycerol enzyme specificity को प्रभावित कर सकता है। इसलिए enzyme volume limited रखा जाता है। / Too much glycerol can affect enzyme specificity. Therefore enzyme volume is kept limited.

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Restriction enzyme को बार-बार freeze-thaw करने से क्या हो सकता है?

What can happen by repeated freeze-thaw of restriction enzyme?

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A. enzyme activity घट सकती हैEnzyme activity can decrease

Explanation

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Repeated freeze-thaw enzyme stability घटा सकता है। Enzyme को cold और carefully handle करें। / Repeated freeze-thaw can reduce enzyme stability. Handle enzyme cold and carefully.

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Restriction digestion setup में enzyme को अंत में क्यों add किया जाता है?

Why is enzyme added last in restriction digestion setup?

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B. reaction conditions ready होने के बाद enzyme exposure control करने के लिएTo control enzyme exposure after reaction conditions are ready

Explanation

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Enzyme last में add करने से reaction conditions पहले correct हो जाती हैं। यह activity और timing control में मदद करता है। / Adding enzyme last ensures reaction conditions are correct first. It helps control activity and timing.

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Restriction reaction में nuclease-free water क्यों उपयोग होता है?

Why is nuclease-free water used in restriction reaction?

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C. unwanted DNA degradation से बचने के लिएTo avoid unwanted DNA degradation

Explanation

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Nuclease-free water unwanted nucleases से बचाता है। इससे DNA sample intact रहता है। / Nuclease-free water avoids unwanted nucleases. This keeps the DNA sample intact.

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Restriction digestion में clean pipette tips क्यों जरूरी हैं?

Why are clean pipette tips important in restriction digestion?

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D. contamination और nuclease entry रोकने के लिएTo prevent contamination and nuclease entry

Explanation

Simple Explanation

Contaminated tips DNA या enzyme reaction को खराब कर सकते हैं। Fresh sterile tips use करें। / Contaminated tips can spoil DNA or enzyme reaction. Use fresh sterile tips.

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Restriction digestion के लिए DNA sample में leftover ethanol क्यों नहीं होना चाहिए?

Why should leftover ethanol not be present in a DNA sample for restriction digestion?

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A. ethanol enzyme reaction inhibit कर सकता हैEthanol can inhibit enzyme reaction

Explanation

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Residual ethanol restriction enzyme activity घटा सकता है। DNA pellet को सही तरह dry करना चाहिए। / Residual ethanol can reduce restriction enzyme activity. The DNA pellet should be dried properly.

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Phenol contamination restriction digestion में क्या कर सकता है?

What can phenol contamination do in restriction digestion?

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A. enzyme activity को inhibit कर सकता हैIt can inhibit enzyme activity

Explanation

Simple Explanation

Phenol जैसे contaminants enzyme reactions को रोक सकते हैं। इसलिए DNA cleanup important है। / Contaminants like phenol can inhibit enzyme reactions. Therefore DNA cleanup is important.

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DNA methylation के कारण restriction digest fail क्यों हो सकता है?

Why can restriction digest fail due to DNA methylation?

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A. methylation enzyme recognition रोक सकती हैMethylation can block enzyme recognition

Explanation

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कुछ enzymes methylated recognition sites नहीं काटते। Methylation sensitivity enzyme choice में देखनी चाहिए। / Some enzymes do not cut methylated recognition sites. Methylation sensitivity should be checked in enzyme choice.

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Methylation-sensitive enzyme क्या करता है?

What does a methylation-sensitive enzyme do?

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A. methylated site पर cutting बदल सकती हैIts cutting can change at methylated site

Explanation

Simple Explanation

Methylation-sensitive enzymes methylated DNA को कम या नहीं काट सकते। यह digestion pattern बदल सकता है। / Methylation-sensitive enzymes may cut methylated DNA poorly or not at all. This can change digestion pattern.

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Restriction digestion में substrate DNA का अर्थ क्या है?

What does substrate DNA mean in restriction digestion?

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A. वह DNA जिसे enzyme काटेगाThe DNA that enzyme will cut

Explanation

Simple Explanation

Substrate DNA reaction में cutting target होता है। Enzyme recognition site इसी DNA पर खोजता है। / Substrate DNA is the cutting target in the reaction. The enzyme looks for recognition site on this DNA.

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Linear DNA और circular DNA digestion patterns अलग क्यों हो सकते हैं?

Why can linear and circular DNA digestion patterns differ?

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A. उनकी shape और cut site arrangement अलग होती हैTheir shape and cut site arrangement differ

Explanation

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Circular DNA एक cut से linear हो सकता है जबकि linear DNA में fragment count अलग हो सकता है। Shape pattern को प्रभावित करती है। / Circular DNA can become linear with one cut while linear DNA can show different fragment counts. Shape affects pattern.

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Supercoiled plasmid gel पर linear plasmid से अलग क्यों दिख सकता है?

Why can supercoiled plasmid look different from linear plasmid on gel?

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A. supercoiled shape migration बदलती हैSupercoiled shape changes migration

Explanation

Simple Explanation

Plasmid conformation gel mobility को प्रभावित करती है। इसलिए uncut plasmid के bands अलग दिख सकते हैं। / Plasmid conformation affects gel mobility. Therefore uncut plasmid bands can look different.

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Restriction digest के बाद vector linearization का अर्थ क्या है?

What does vector linearization after restriction digest mean?

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A. circular vector को काटकर linear बनानाCutting circular vector to make it linear

Explanation

Simple Explanation

Linearized vector insert ligation के लिए तैयार हो सकता है। सही site पर cut होना जरूरी है। / A linearized vector can be ready for insert ligation. Cutting at the correct site is necessary.

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Vector self-ligation रोकने में कौन सा treatment मदद कर सकता है?

Which treatment can help prevent vector self-ligation?

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B. alkaline phosphatase treatment

Explanation

Simple Explanation

Alkaline phosphatase vector ends से phosphate हटाकर self-ligation घटा सकता है। यह cloning efficiency में मदद करता है। / Alkaline phosphatase removes phosphate from vector ends and can reduce self-ligation. This helps cloning efficiency.

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Restriction digestion के बाद insert purification क्यों की जाती है?

Why is insert purification done after restriction digestion?

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A. insert को बाकी DNA और enzyme से अलग करने के लिएTo separate insert from other DNA and enzyme

Explanation

Simple Explanation

Purification desired insert को साफ करती है। इससे ligation और cloning result बेहतर हो सकते हैं। / Purification cleans the desired insert. This can improve ligation and cloning results.

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Gel extraction में UV light exposure बहुत ज्यादा होने से क्या नुकसान हो सकता है?

What harm can too much UV light exposure cause during gel extraction?

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A. DNA damage हो सकता हैDNA can be damaged

Explanation

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UV exposure DNA को damage कर सकता है। Desired band को जल्दी और सावधानी से excise करें। / UV exposure can damage DNA. Excise the desired band quickly and carefully.

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Restriction enzyme reaction के बाद cleanup कब helpful है?

When is cleanup after restriction enzyme reaction helpful?

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A. ligation या PCR से पहले inhibitors हटाने के लिएTo remove inhibitors before ligation or PCR

Explanation

Simple Explanation

Cleanup enzyme buffer salts और छोटे fragments हटाने में मदद कर सकता है। इससे next step efficient हो सकता है। / Cleanup can remove enzyme buffer salts and small fragments. This can make the next step efficient.

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Restriction digestion में negative control का उदाहरण क्या हो सकता है?

What can be an example of a negative control in restriction digestion?

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B. DNA without enzyme

Explanation

Simple Explanation

DNA without enzyme uncut pattern दिखाता है। इससे cutting effect compare किया जाता है। / DNA without enzyme shows the uncut pattern. It is used to compare the cutting effect.

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Positive control digest क्यों लगाया जा सकता है?

Why can a positive control digest be set up?

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A. enzyme काम कर रहा है या नहीं देखने के लिएTo check whether enzyme is working

Explanation

Simple Explanation

Known DNA substrate पर expected cut enzyme activity verify करता है। यह troubleshooting में useful है। / Expected cutting on a known DNA substrate verifies enzyme activity. This is useful in troubleshooting.

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अगर positive control भी cut न हो तो क्या suspect करेंगे?

If even the positive control does not cut what should be suspected?

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A. enzyme buffer या condition problemEnzyme buffer or condition problem

Explanation

Simple Explanation

Positive control failure enzyme या reaction condition में problem दिखाता है। Buffer temperature और enzyme storage check करें। / Positive control failure indicates a problem with enzyme or reaction condition. Check buffer temperature and enzyme storage.

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Test DNA न कटे लेकिन positive control कटे तो क्या हो सकता है?

If test DNA does not cut but positive control cuts what can be the reason?

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A. test DNA में site absent या methylated हो सकती हैTest DNA may lack site or be methylated

Explanation

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Positive control enzyme activity दिखाता है। Test DNA में recognition site या methylation issue हो सकता है। / Positive control shows enzyme activity. Test DNA may have recognition site or methylation issue.

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Restriction enzyme lot या batch बदलने पर क्या check करना useful है?

What is useful to check when restriction enzyme lot or batch changes?

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A. activity और expected digestionActivity and expected digestion

Explanation

Simple Explanation

New batch की performance verify करना reliable results के लिए अच्छा practice है। Control digest उपयोगी है। / Verifying performance of a new batch is good practice for reliable results. Control digest is useful.

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Restriction enzyme reaction में incorrect pH का क्या प्रभाव हो सकता है?

What effect can incorrect pH have in a restriction enzyme reaction?

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A. enzyme activity घट सकती हैEnzyme activity can decrease

Explanation

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Enzymes specific pH range में best work करते हैं। Buffer correct pH maintain करता है। / Enzymes work best in a specific pH range. Buffer maintains the correct pH.

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Restriction enzyme reaction में salt concentration क्यों important है?

Why is salt concentration important in a restriction enzyme reaction?

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A. enzyme specificity और activity को प्रभावित कर सकता हैIt can affect enzyme specificity and activity

Explanation

Simple Explanation

Salt condition enzyme binding और cutting को प्रभावित करती है। Recommended buffer use करें। / Salt condition affects enzyme binding and cutting. Use the recommended buffer.

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Restriction enzyme को ice पर रखने का कारण क्या है?

Why is restriction enzyme kept on ice?

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A. enzyme activity और stability बचाने के लिएTo preserve enzyme activity and stability

Explanation

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Restriction enzymes heat sensitive हो सकते हैं। Ice पर रखने से activity loss कम होता है। / Restriction enzymes can be heat sensitive. Keeping on ice reduces activity loss.

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Reaction tube को gently mix क्यों किया जाता है?

Why is the reaction tube mixed gently?

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A. DNA और enzyme evenly mix करने के लिए without shearingTo mix DNA and enzyme evenly without shearing

Explanation

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Gentle mixing reaction components मिलाता है और DNA damage से बचाता है। Harsh vortexing avoid करें। / Gentle mixing combines reaction components and avoids DNA damage. Avoid harsh vortexing.

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Restriction digestion के बाद ligation से पहले vector ends compatible क्यों होने चाहिए?

Why should vector ends be compatible before ligation after restriction digestion?

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A. DNA ligase तभी efficient joining कर पाएगाDNA ligase can then join efficiently

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Compatible ends base pairing और ligation को आसान बनाते हैं। Incompatible ends cloning failure दे सकते हैं। / Compatible ends make base pairing and ligation easier. Incompatible ends can cause cloning failure.

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Restriction digestion में fragment size estimate गलत क्यों हो सकता है?

Why can fragment size estimation be wrong in restriction digestion?

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A. gel percentage या ladder mismatch के कारणDue to gel percentage or ladder mismatch

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Gel percentage और सही ladder size estimation को प्रभावित करते हैं। Proper ladder choose करें। / Gel percentage and correct ladder affect size estimation. Choose a proper ladder.

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Agarose percentage small fragments के लिए क्यों बदली जा सकती है?

Why can agarose percentage be changed for small fragments?

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A. better resolution पाने के लिएTo obtain better resolution

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छोटे fragments अलग करने के लिए higher agarose percentage बेहतर resolution दे सकती है। Size range के अनुसार gel चुनें। / Higher agarose percentage can give better resolution for small fragments. Choose gel according to size range.

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Level 46 का best revision point क्या है?

What is the best revision point of Level 46?

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A. complete digestion partial digestion star activity और controls याद रखेंRemember complete digestion partial digestion star activity and controls

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Restriction digestion में correct conditions और controls result को reliable बनाते हैं। Unexpected bands troubleshooting मांगते हैं। / In restriction digestion correct conditions and controls make results reliable. Unexpected bands need troubleshooting.

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Cutting of DNA level 46 का safe summary क्या है?

What is the safe summary of Cutting of DNA level 46?

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A. restriction digestion में enzyme condition DNA purity और band pattern महत्वपूर्ण हैंIn restriction digestion enzyme condition DNA purity and band pattern are important

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Good digestion सही enzyme buffer temperature और clean DNA पर निर्भर है। Controls और gel check जरूरी हैं। / Good digestion depends on correct enzyme buffer temperature and clean DNA. Controls and gel check are necessary.

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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 47 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.