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Class 11 Biotechnology Easy Quiz

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

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Restriction digestion में compatible sticky ends क्यों useful होते हैं?

Why are compatible sticky ends useful in restriction digestion?

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A. वे complementary base pairing कर सकते हैंThey can do complementary base pairing

Explanation

Simple Explanation

Compatible sticky ends temporary pairing करते हैं। Ligase बाद में backbone को स्थायी रूप से जोड़ता है। / Compatible sticky ends pair temporarily. Ligase later joins the backbone permanently.

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Cohesive ends किसके दूसरे नाम हैं?

Cohesive ends are another name for what?

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B. sticky ends

Explanation

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Sticky ends complementary overhangs के कारण cohesive ends भी कहलाते हैं। वे ligation में मदद करते हैं। / Sticky ends are also called cohesive ends because of complementary overhangs. They help in ligation.

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Blunt ends ligation में relatively कठिन क्यों हो सकते हैं?

Why can blunt ends be relatively difficult in ligation?

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A. उनमें complementary overhang नहीं होताThey lack complementary overhang

Explanation

Simple Explanation

Blunt ends में sticky base pairing support नहीं होता। इसलिए ligation efficiency कम हो सकती है। / Blunt ends lack sticky base pairing support. Therefore ligation efficiency can be lower.

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किस cut से 5 prime overhang बन सकता है?

Which cut can produce a 5 prime overhang?

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A. staggered cut

Explanation

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Staggered cuts single-stranded overhangs बना सकते हैं। Overhang 5 prime या 3 prime हो सकता है। / Staggered cuts can produce single-stranded overhangs. The overhang can be 5 prime or 3 prime.

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3 prime overhang का अर्थ क्या है?

What does a 3 prime overhang mean?

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A. single-stranded extension 3 prime end पर हैSingle-stranded extension is at the 3 prime end

Explanation

Simple Explanation

कुछ restriction enzymes 3 prime overhang बनाते हैं। Overhang type ligation compatibility को प्रभावित करता है। / Some restriction enzymes produce 3 prime overhangs. Overhang type affects ligation compatibility.

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Restriction enzyme से बने ends की polarity जानना क्यों जरूरी है?

Why is it important to know polarity of ends produced by restriction enzyme?

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A. compatible ligation plan बनाने के लिएTo make a compatible ligation plan

Explanation

Simple Explanation

5 prime और 3 prime overhangs अलग compatibility रखते हैं। Cloning design में end polarity important है। / 5 prime and 3 prime overhangs have different compatibility. End polarity is important in cloning design.

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Same overhang देने वाले अलग enzymes cloning में कैसे useful हो सकते हैं?

How can different enzymes giving the same overhang be useful in cloning?

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A. compatible ligation allow कर सकते हैंThey can allow compatible ligation

Explanation

Simple Explanation

Different enzymes sometimes same overhang बना सकते हैं। ऐसे ends ligate हो सकते हैं। / Different enzymes can sometimes produce the same overhang. Such ends can ligate.

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Compatible ends ligate होने के बाद recognition site हमेशा वापस क्यों नहीं बनती?

Why is the recognition site not always restored after compatible ends ligate?

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A. क्योंकि अलग enzymes के ends जुड़ने पर hybrid site बन सकती हैBecause ends from different enzymes can form a hybrid site

Explanation

Simple Explanation

Compatible ends from different enzymes ligate होकर original sites बदल सकते हैं। इससे site दुबारा cut न भी हो सके। / Compatible ends from different enzymes can ligate and change original sites. The site may not cut again.

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Restriction site destroy होना cloning verification में कब useful हो सकता है?

When can destruction of restriction site be useful in cloning verification?

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A. जब ligation के बाद old site cut न होWhen the old site does not cut after ligation

Explanation

Simple Explanation

कुछ ligations original restriction site को खत्म कर देते हैं। Diagnostic digest से यह पता लगाया जा सकता है। / Some ligations destroy the original restriction site. Diagnostic digest can detect this.

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Restriction digestion से insert orientation directly क्यों हर बार confirm नहीं होती?

Why does restriction digestion not always directly confirm insert orientation?

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A. कभी band pattern orientation में समान हो सकता हैSometimes band pattern can be same for orientations

Explanation

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Orientation confirm करने के लिए informative restriction sites चाहिए। Otherwise sequencing या orientation PCR जरूरी हो सकता है। / Informative restriction sites are needed to confirm orientation. Otherwise sequencing or orientation PCR may be needed.

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Informative diagnostic digest का अर्थ क्या है?

What does informative diagnostic digest mean?

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A. ऐसा digest जो expected alternatives को अलग-अलग band patterns देA digest that gives different band patterns for expected alternatives

Explanation

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Informative digest सही clone और wrong clone में फर्क दिखाता है। Enzyme selection इसी आधार पर होती है। / An informative digest distinguishes correct clone from wrong clone. Enzyme selection is based on this.

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Restriction map से क्या predict किया जा सकता है?

What can be predicted from a restriction map?

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A. enzyme cut positions और fragment sizesEnzyme cut positions and fragment sizes

Explanation

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Restriction map expected bands बताता है। यह digestion result की interpretation में मदद करता है। / A restriction map tells expected bands. It helps interpret digestion result.

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Restriction map के बिना diagnostic digest क्यों कठिन हो सकता है?

Why can diagnostic digest be difficult without a restriction map?

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A. expected bands पता नहीं चलेंगेExpected bands will not be known

Explanation

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Map expected fragment sizes देता है। बिना map observed bands का meaning unclear हो सकता है। / A map gives expected fragment sizes. Without a map observed band meaning can be unclear.

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Virtual digest software किसलिए useful है?

Why is virtual digest software useful?

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A. enzyme sites और bands का prediction करने के लिएTo predict enzyme sites and bands

Explanation

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Virtual digest actual experiment से पहले expected pattern दिखा सकता है। यह planning में helpful है। / Virtual digest can show expected pattern before the actual experiment. It is helpful in planning.

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Restriction enzyme supplier information क्यों check की जाती है?

Why is restriction enzyme supplier information checked?

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A. buffer temperature methylation sensitivity और heat inactivation जानने के लिएTo know buffer temperature methylation sensitivity and heat inactivation

Explanation

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हर enzyme की working condition अलग हो सकती है। Official data सही reaction setup में मदद करता है। / Each enzyme can have different working conditions. Official data helps correct reaction setup.

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Restriction enzyme के साथ provided buffer use करना क्यों बेहतर है?

Why is it better to use the buffer provided with the restriction enzyme?

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A. वह enzyme की activity के लिए optimized होता हैIt is optimized for enzyme activity

Explanation

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Provided buffer pH salt और cofactors को enzyme के अनुसार रखता है। इससे digestion reliability बढ़ती है। / Provided buffer sets pH salt and cofactors according to the enzyme. This increases digestion reliability.

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Double digest में enzymes अगर अलग temperatures पर काम करें तो क्या कर सकते हैं?

If enzymes in double digest work at different temperatures what can be done?

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A. sequential digestion plan करेंPlan sequential digestion

Explanation

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Sequential digestion में enzymes को अलग steps में suitable conditions मिलती हैं। इससे digestion success बढ़ती है। / Sequential digestion gives enzymes suitable conditions in separate steps. This improves digestion success.

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Double digest में one-pot reaction का अर्थ क्या है?

What does one-pot reaction mean in double digest?

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A. दो enzymes एक ही tube में साथ use करनाUsing two enzymes together in one tube

Explanation

Simple Explanation

One-pot double digestion तभी अच्छा है जब दोनों enzymes compatible buffer और temperature में काम करें। / One-pot double digestion is good only when both enzymes work in compatible buffer and temperature.

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अगर double digest में एक enzyme ही काम करे तो gel पर क्या हो सकता है?

If only one enzyme works in double digest what can happen on gel?

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A. single digest जैसा pattern आ सकता हैA single-digest-like pattern can appear

Explanation

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One enzyme failure expected double digest pattern नहीं देगा। Controls help identify which enzyme failed। / One enzyme failure will not give expected double digest pattern. Controls help identify which enzyme failed.

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Double digest troubleshooting में single enzyme controls क्यों useful हैं?

Why are single enzyme controls useful in double digest troubleshooting?

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A. कौन सा enzyme काम कर रहा है पहचानने के लिएTo identify which enzyme is working

Explanation

Simple Explanation

Single controls each enzyme activity को अलग से दिखाते हैं। इससे failure source पता चलता है। / Single controls show activity of each enzyme separately. This reveals the failure source.

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Restriction digestion में enzyme volume बहुत ज्यादा क्यों avoid करते हैं?

Why is too much enzyme volume avoided in restriction digestion?

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A. storage glycerol ज्यादा होकर star activity बढ़ सकती हैStorage glycerol can become high and increase star activity

Explanation

Simple Explanation

Enzyme storage buffer में glycerol होता है। Reaction में अधिक glycerol specificity घटा सकता है। / Enzyme storage buffer contains glycerol. Too much glycerol in reaction can reduce specificity.

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Restriction digestion के बाद enzyme activity बची रहे तो next cloning step में क्या risk है?

If enzyme activity remains after restriction digestion what is the risk in next cloning step?

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A. unwanted further cutting हो सकती हैUnwanted further cutting can occur

Explanation

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Active enzyme ligation mix में DNA ends को फिर काट सकता है। Cleanup या inactivation useful हो सकती है। / Active enzyme can cut DNA ends again in ligation mix. Cleanup or inactivation can be useful.

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Restriction digestion cleanup के बाद DNA concentration फिर क्यों मापी जाती है?

Why is DNA concentration measured again after restriction digestion cleanup?

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A. cleanup में DNA loss हो सकता हैDNA loss can occur during cleanup

Explanation

Simple Explanation

Cleanup recovery पूर्ण नहीं होती। Ligation setup के लिए actual DNA concentration जानना जरूरी है। / Cleanup recovery is not complete. Actual DNA concentration is needed for ligation setup.

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Insert to vector molar ratio क्यों important है?

Why is insert to vector molar ratio important?

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A. ligation product formation को प्रभावित करता हैIt affects ligation product formation

Explanation

Simple Explanation

Insert और vector का सही ratio recombinant clones की संभावना बढ़ा सकता है। Incorrect ratio low cloning efficiency दे सकता है। / Correct insert and vector ratio can increase chances of recombinant clones. Incorrect ratio can give low cloning efficiency.

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Vector dephosphorylation का उद्देश्य क्या है?

What is the purpose of vector dephosphorylation?

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A. vector self-ligation घटानाReducing vector self-ligation

Explanation

Simple Explanation

Phosphate हटाने से vector ends अपने आप जुड़ने की संभावना कम होती है। इससे recombinant clone proportion बढ़ सकता है। / Removing phosphate reduces the chance of vector ends joining themselves. This can increase recombinant clone proportion.

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Alkaline phosphatase treatment के बाद cleanup क्यों जरूरी हो सकता है?

Why can cleanup be needed after alkaline phosphatase treatment?

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A. phosphatase हटाने के लिए जो ligation को affect कर सकती हैTo remove phosphatase that can affect ligation

Explanation

Simple Explanation

Residual phosphatase ligation setup में phosphate removal जारी रख सकती है। इसलिए cleanup useful है। / Residual phosphatase can keep removing phosphate in ligation setup. Therefore cleanup is useful.

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Restriction enzyme से cut vector का self-ligation कब अधिक हो सकता है?

When can self-ligation of a restriction-cut vector be more likely?

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A. single enzyme sticky ends compatible होंSingle enzyme sticky ends are compatible

Explanation

Simple Explanation

Same compatible ends vector को खुद से ligate कर सकते हैं। Dephosphorylation या directional cloning इसे घटा सकती है। / Same compatible ends can let vector ligate to itself. Dephosphorylation or directional cloning can reduce this.

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Directional cloning self-ligation को कैसे कम कर सकती है?

How can directional cloning reduce self-ligation?

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A. दो अलग incompatible vector ends बनाकरBy creating two different incompatible vector ends

Explanation

Simple Explanation

Different ends vector को same orientation में close होने से रोक सकते हैं। Insert correct orientation में लग सकता है। / Different ends can prevent the vector from closing in the same orientation. Insert can join in correct orientation.

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Restriction cutting के बाद ligation से पहले DNA ends की cleanliness क्यों जरूरी है?

Why is cleanliness of DNA ends important before ligation after restriction cutting?

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A. contaminants ligase activity रोक सकते हैंContaminants can inhibit ligase activity

Explanation

Simple Explanation

Salt ethanol phenol या enzymes ligation में बाधा डाल सकते हैं। Clean DNA ends बेहतर joining देते हैं। / Salt ethanol phenol or enzymes can interfere with ligation. Clean DNA ends give better joining.

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Restriction digest में clean DNA sample क्यों जरूरी है?

Why is a clean DNA sample necessary in restriction digest?

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A. restriction enzyme impurities से inhibit हो सकता हैRestriction enzyme can be inhibited by impurities

Explanation

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Phenol ethanol और salts enzyme activity कम कर सकते हैं। इसलिए digestion से पहले DNA purity check करें। / Phenol ethanol and salts can reduce enzyme activity. Therefore check DNA purity before digestion.

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DNA isolation से आए EDTA का restriction digestion पर क्या असर हो सकता है?

What effect can EDTA from DNA isolation have on restriction digestion?

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A. magnesium bind कर enzyme activity घटा सकता हैIt can bind magnesium and reduce enzyme activity

Explanation

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EDTA divalent ions bind करता है। कई restriction enzymes को magnesium चाहिए होता है। / EDTA binds divalent ions. Many restriction enzymes need magnesium.

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TE buffer में रखे DNA को digestion में use करते समय क्या ध्यान दें?

What should be considered when using DNA stored in TE buffer for digestion?

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A. EDTA concentration enzyme reaction को affect कर सकती हैEDTA concentration can affect enzyme reaction

Explanation

Simple Explanation

TE में EDTA होता है जो magnesium chelate कर सकता है। Reaction setup में buffer compatibility देखें। / TE contains EDTA that can chelate magnesium. Check buffer compatibility in reaction setup.

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Restriction digestion में salt contamination कहाँ से आ सकती है?

Where can salt contamination come from in restriction digestion?

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A. DNA purification wash carryover सेFrom DNA purification wash carryover

Explanation

Simple Explanation

Purification से leftover salts enzyme activity बदल सकते हैं। DNA cleanup और proper drying helpful हैं। / Leftover salts from purification can alter enzyme activity. DNA cleanup and proper drying are helpful.

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Restriction digestion में reaction volume बहुत छोटा रखने से क्या practical समस्या हो सकती है?

What practical problem can occur if reaction volume is kept too small in restriction digestion?

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A. pipetting error का effect अधिक हो सकता हैPipetting error effect can be larger

Explanation

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बहुत छोटे volumes में small pipetting errors भी concentration बदल सकते हैं। Accurate pipetting जरूरी है। / In very small volumes small pipetting errors can change concentrations. Accurate pipetting is necessary.

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Restriction digestion master mix का एक benefit क्या है?

What is one benefit of a restriction digestion master mix?

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A. common components समान रखने में मददHelps keep common components the same

Explanation

Simple Explanation

Master mix pipetting variation कम करता है। Multiple reactions में reproducibility बेहतर होती है। / A master mix reduces pipetting variation. Reproducibility improves in multiple reactions.

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Restriction digest setup में bubbles क्यों avoid करते हैं?

Why are bubbles avoided in restriction digest setup?

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A. accurate mixing और pipetting maintain करने के लिएTo maintain accurate mixing and pipetting

Explanation

Simple Explanation

Bubbles small reaction volumes में inaccurate volume और mixing दे सकते हैं। Gentle pipetting बेहतर है। / Bubbles can cause inaccurate volume and mixing in small reactions. Gentle pipetting is better.

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Restriction digestion में tube spin-down क्यों किया जाता है?

Why is a tube spin-down done in restriction digestion?

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A. liquid को bottom पर collect करने के लिएTo collect liquid at the bottom

Explanation

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Spin-down droplets को tube wall से नीचे लाता है। इससे reaction components properly mix होते हैं। / Spin-down brings droplets from tube wall to bottom. This helps reaction components mix properly.

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Restriction digestion में evaporation रोकना क्यों जरूरी है?

Why is preventing evaporation important in restriction digestion?

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A. reaction concentration stable रखने के लिएTo keep reaction concentration stable

Explanation

Simple Explanation

Evaporation से salt और enzyme concentrations बदल सकती हैं। Proper tube closure और incubation conditions important हैं। / Evaporation can change salt and enzyme concentrations. Proper tube closure and incubation conditions are important.

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Restriction enzyme reaction में incubation temperature बहुत low हो तो क्या हो सकता है?

What can happen if incubation temperature is too low in restriction enzyme reaction?

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A. enzyme activity धीमी हो सकती हैEnzyme activity can be slow

Explanation

Simple Explanation

Low temperature enzyme kinetics घटा सकता है। Optimum temperature use करें। / Low temperature can reduce enzyme kinetics. Use optimum temperature.

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Temperature बहुत high हो जाए तो restriction enzyme पर क्या असर हो सकता है?

What can happen to a restriction enzyme if temperature becomes too high?

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A. enzyme denature या inactive हो सकता हैEnzyme can denature or become inactive

Explanation

Simple Explanation

Enzymes proteins हैं और excessive heat से activity खो सकते हैं। Recommended temperature follow करें। / Enzymes are proteins and can lose activity by excessive heat. Follow recommended temperature.

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Restriction digestion में incubation device का role क्या है?

What is the role of incubation device in restriction digestion?

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A. stable temperature provide करनाProviding stable temperature

Explanation

Simple Explanation

Stable temperature enzyme activity को consistent रखता है। Water bath या heat block use हो सकता है। / Stable temperature keeps enzyme activity consistent. A water bath or heat block can be used.

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Restriction digest gel में lane order record करना क्यों जरूरी है?

Why is recording lane order necessary in a restriction digest gel?

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A. band identity सही interpret करने के लिएTo interpret band identity correctly

Explanation

Simple Explanation

Lane order भूलने पर sample identity confuse हो सकती है। Gel documentation में lane map लिखें। / If lane order is forgotten sample identity can be confused. Write lane map in gel documentation.

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Restriction digestion में lane map क्या बताता है?

What does a lane map show in restriction digestion?

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A. किस lane में कौन सा sample loaded हैWhich sample is loaded in each lane

Explanation

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Lane map gel interpretation के लिए जरूरी है। यह sample mix-up से बचाता है। / A lane map is necessary for gel interpretation. It prevents sample mix-up.

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Restriction digestion में ethical reporting का मतलब क्या है?

What does ethical reporting mean in restriction digestion?

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A. observed results को सही और ईमानदारी से report करनाReporting observed results correctly and honestly

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Scientific honesty गलत conclusions से बचाती है। Gel results को बिना बदलाव report करना चाहिए। / Scientific honesty prevents wrong conclusions. Gel results should be reported without manipulation.

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Gel image manipulation क्यों गलत है?

Why is gel image manipulation wrong?

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A. यह scientific conclusion को misleading बना सकती हैIt can make scientific conclusion misleading

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Manipulated images गलत result दिखा सकती हैं। Accurate documentation responsible science का भाग है। / Manipulated images can show false results. Accurate documentation is part of responsible science.

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Restriction digestion में hazardous stain use हो तो क्या जरूरी है?

What is necessary if a hazardous stain is used in restriction digestion?

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A. PPE और approved waste disposalPPE and approved waste disposal

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कुछ DNA stains hazardous हो सकते हैं। Gloves और proper disposal safety के लिए जरूरी हैं। / Some DNA stains can be hazardous. Gloves and proper disposal are necessary for safety.

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Restriction digestion waste में क्या हो सकता है?

What can restriction digestion waste contain?

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A. DNA stain buffer और biological DNA materialDNA stain buffer and biological DNA material

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Waste को lab safety rules के अनुसार dispose करना चाहिए। Stain-containing waste special handling मांग सकता है। / Waste should be disposed according to lab safety rules. Stain-containing waste may need special handling.

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Level 49 का best revision point क्या है?

What is the best revision point of Level 49?

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A. ends compatibility diagnostic planning cleanup और documentation याद रखेंRemember ends compatibility diagnostic planning cleanup and documentation

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Cutting step ligation और verification से directly जुड़ा है। Clean compatible ends और correct records जरूरी हैं। / The cutting step is directly linked to ligation and verification. Clean compatible ends and correct records are needed.

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Level 49 में cloning success का main practical factor क्या है?

What is the main practical factor for cloning success in Level 49?

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A. correct enzyme choice and clean compatible ends

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Correct cutting insert और vector को सही तरह जोड़ने योग्य बनाता है। Cleanup और ratio ligation को support करते हैं। / Correct cutting makes insert and vector suitable for joining. Cleanup and ratio support ligation.

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Cutting of DNA level 49 का final summary क्या है?

What is the final summary of Cutting of DNA level 49?

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A. restriction cutting में compatible ends बनाकर ligation और verification के लिए DNA तैयार होता हैRestriction cutting prepares DNA for ligation and verification by forming compatible ends

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DNA cutting का goal controlled fragments और ends बनाना है। Accurate setup gel analysis और records result को reliable बनाते हैं। / The goal of DNA cutting is to make controlled fragments and ends. Accurate setup gel analysis and records make results reliable.

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Class 11 Biotechnology Quiz FAQs

How many questions are in this quiz?

This level is designed for 50 active questions. Currently 50 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?

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