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Concept-wise Practice

ligation MCQ Questions for Class 11

ligation se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

84 questions tagged with ligation.

Restriction digest product में buffer exchange कब जरूरत हो सकती है?

When can buffer exchange be needed for restriction digest product?

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A. next enzyme या ligase buffer incompatible होWhen next enzyme or ligase buffer is incompatible

Explanation

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Buffer exchange unwanted salts और components हटाकर next reaction के लिए suitable condition देता है। / Buffer exchange removes unwanted salts and components to give suitable condition for next reaction.

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Restriction digestion में plasmid prep clean न हो तो cloning पर क्या असर हो सकता है?

What can happen to cloning if plasmid prep is not clean in restriction digestion?

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A. digestion और ligation दोनों प्रभावित हो सकते हैंBoth digestion and ligation can be affected

Explanation

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Contaminants restriction enzyme और ligase reactions को inhibit कर सकते हैं। Clean preparation important है। / Contaminants can inhibit restriction enzyme and ligase reactions. Clean preparation is important.

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Purified restriction fragment को ligation से पहले quantify क्यों करते हैं?

Why is purified restriction fragment quantified before ligation?

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A. insert-vector ratio सही रखने के लिएTo keep insert-vector ratio correct

Explanation

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Ligation setup में fragment amount और molar ratio important हैं। Quantification cloning efficiency सुधारती है। / Fragment amount and molar ratio are important in ligation setup. Quantification improves cloning efficiency.

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Restriction digestion में enzyme carryover ligation में क्यों risk है?

Why is enzyme carryover risky in ligation after restriction digestion?

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A. ligated DNA को फिर cut कर सकता हैIt can cut ligated DNA again

Explanation

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Active restriction enzyme newly ligated DNA को काट सकता है। इसलिए inactivation या purification use करें। / Active restriction enzyme can cut newly ligated DNA. Therefore use inactivation or purification.

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Level 53 का best revision point क्या है?

What is the best revision point of Level 53?

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A. cut ends purification ratio ligation और downstream cloning याद रखेंRemember cut ends purification ratio ligation and downstream cloning

Explanation

Simple Explanation

DNA cutting ligation की तैयारी करता है। Clean compatible ends और correct ratio cloning success में मदद करते हैं। / DNA cutting prepares for ligation. Clean compatible ends and correct ratio help cloning success.

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Cutting of DNA step cloning workflow में कहाँ आता है?

Where does Cutting of DNA step come in cloning workflow?

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A. DNA isolation के बाद और ligation से पहलेAfter DNA isolation and before ligation

Explanation

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पहले DNA isolate किया जाता है फिर restriction cutting होती है। उसके बाद ligation और transformation आते हैं। / First DNA is isolated then restriction cutting occurs. After that come ligation and transformation.

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Restriction digestion में purification के बाद elution buffer choose करते समय क्या ध्यान रखें?

What should be considered while choosing elution buffer after purification in restriction digestion?

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A. next ligation या enzyme reaction compatibilityCompatibility with next ligation or enzyme reaction

Explanation

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Elution buffer में ऐसे components न हों जो ligation inhibit करें। Downstream use के अनुसार buffer चुनें। / Elution buffer should not contain components that inhibit ligation. Choose buffer according to downstream use.

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Restriction digest में small unwanted fragments ligation में क्या कर सकते हैं?

What can small unwanted fragments do in ligation after restriction digest?

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A. compete करके unwanted products बना सकते हैंThey can compete and form unwanted products

Explanation

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Unwanted fragments ligation reaction में interfere कर सकते हैं। Purification specific desired fragments रखती है। / Unwanted fragments can interfere in ligation reaction. Purification keeps specific desired fragments.

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Restriction digestion में same enzyme से cut vector में orientation issue क्यों हो सकता है?

Why can orientation issue occur in a vector cut with the same enzyme?

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A. insert दोनों directions में ligate हो सकता हैInsert can ligate in both directions

Explanation

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Same ends insert को either orientation में allow कर सकते हैं। Orientation screening जरूरी हो सकती है। / Same ends can allow insert in either orientation. Orientation screening may be needed.

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Restriction digestion में molar ratio mass ratio से क्यों अलग हो सकता है?

Why can molar ratio differ from mass ratio in restriction digestion work?

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A. fragment length अलग होने के कारणBecause fragment lengths differ

Explanation

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लंबे और छोटे fragments की same mass में molecule numbers अलग होते हैं। Ligation में molar ratio important है। / Long and short fragments have different molecule numbers at the same mass. Molar ratio is important in ligation.

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Restriction digest में fragment बहुत छोटा हो तो ligation में क्या issue हो सकता है?

If a fragment is very small in restriction digest what issue can occur in ligation?

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A. recovery और quantification कठिन हो सकती हैRecovery and quantification can be difficult

Explanation

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छोटे fragments gel extraction में खो सकते हैं। Accurate amount estimate भी कठिन हो सकता है। / Small fragments can be lost during gel extraction. Accurate amount estimation can also be difficult.

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Restriction digestion के बाद ligation setup में leftover restriction enzyme क्यों समस्या है?

Why is leftover restriction enzyme a problem in ligation setup after restriction digestion?

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A. वह DNA को फिर काट सकता हैIt can cut DNA again

Explanation

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Active restriction enzyme ligation mix में newly joined DNA को काट सकता है। Cleanup या inactivation useful है। / Active restriction enzyme can cut newly joined DNA in ligation mix. Cleanup or inactivation is useful.

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Restriction digestion के बाद blunt-end cloning में कौन सा factor अधिक critical हो सकता है?

Which factor can be more critical in blunt-end cloning after restriction digestion?

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A. DNA concentration और ligation conditionDNA concentration and ligation condition

Explanation

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Blunt ends complementary overhang नहीं रखते। इसलिए concentration और ligation condition अधिक महत्वपूर्ण हो जाते हैं। / Blunt ends lack complementary overhang. Therefore concentration and ligation condition become more important.

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Dephosphorylated vector को ligate करने के लिए insert में क्या होना चाहिए?

For ligating a dephosphorylated vector what should the insert have?

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A. phosphate group

Explanation

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Ligase phosphodiester bond बनाने के लिए phosphate की जरूरत रखता है। Insert phosphate joining में मदद करता है। / Ligase needs phosphate to form phosphodiester bond. Insert phosphate helps joining.

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Restriction cut vector को ligation से पहले purify क्यों करते हैं?

Why is a restriction-cut vector purified before ligation?

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A. buffer enzyme और small fragments हटाने के लिएTo remove buffer enzyme and small fragments

Explanation

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Purification ligation inhibitors कम करती है। Clean vector ends recombinant DNA formation में मदद करते हैं। / Purification reduces ligation inhibitors. Clean vector ends help recombinant DNA formation.

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Restriction digestion के बाद ligation के लिए सबसे जरूरी DNA feature क्या है?

What is the most important DNA feature for ligation after restriction digestion?

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A. compatible clean ends

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Compatible clean ends ligase को joining में मदद करते हैं। Impurities ligation को रोक सकती हैं। / Compatible clean ends help ligase in joining. Impurities can block ligation.

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Ligation के बाद restriction site वापस न बने तो इसका कारण क्या हो सकता है?

What can cause a restriction site not to be restored after ligation?

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A. hybrid compatible ends का जुड़नाJoining of hybrid compatible ends

Explanation

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अलग enzymes के compatible ends जुड़कर नया hybrid sequence बना सकते हैं। इससे original site वापस नहीं बनती। / Compatible ends from different enzymes can join to form a new hybrid sequence. Thus the original site is not restored.

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दो अलग restriction enzymes same overhang बना दें तो क्या हो सकता है?

What can happen if two different restriction enzymes create the same overhang?

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A. वे ends ligate हो सकते हैंThe ends can ligate

Explanation

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Same overhang compatible ends बना सकता है। लेकिन ligation के बाद original site बदल सकती है। / The same overhang can create compatible ends. But after ligation the original site may change.

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Restriction digestion के बाद transformation से पहले कौन सा step आता है?

Which step comes after restriction digestion before transformation?

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A. ligation या recombinant DNA formationLigation or recombinant DNA formation

Explanation

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DNA fragments को ligase से जोड़कर recombinant DNA बनाया जाता है। फिर इसे host में introduce किया जाता है। / DNA fragments are joined by ligase to make recombinant DNA. Then it is introduced into a host.

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Restriction digest और ligation में direct connection क्या है?

What is the direct connection between restriction digest and ligation?

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A. digest compatible ends बनाता है जिन्हें ligase जोड़ता हैDigest makes compatible ends that ligase joins

Explanation

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Cutting के बाद DNA ends तयार होते हैं। Ligase उन्हीं ends को जोड़कर recombinant DNA बनाता है। / After cutting DNA ends are prepared. Ligase joins those ends to make recombinant DNA.

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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

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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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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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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

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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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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 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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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 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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Cutting of DNA के बाद अगला सामान्य step कौन सा है?

What is the common next step after cutting DNA?

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A. DNA ligation

Explanation

Simple Explanation

Cutting के बाद compatible DNA fragments को ligase से जोड़ा जाता है। यह recombinant DNA formation का next step है। / After cutting compatible DNA fragments are joined by ligase. This is the next step of recombinant DNA formation.

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Blunt end ligation sticky end ligation से कठिन क्यों हो सकती है?

Why can blunt end ligation be harder than sticky end ligation?

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A. blunt ends में complementary overhang नहीं होताBlunt ends lack complementary overhang

Explanation

Simple Explanation

Sticky ends complementary pairing से पास आते हैं। Blunt ends में यह सहायता नहीं होती। / Sticky ends come together by complementary pairing. Blunt ends do not have this help.

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Restriction digestion के बाद ligation से पहले ends को purify क्यों किया जाता है?

Why are ends purified before ligation after restriction digestion?

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A. enzyme buffer और small fragments हटाने के लिएTo remove enzyme buffer and small fragments

Explanation

Simple Explanation

Purification ligation inhibitors को कम कर सकती है। Clean compatible ends better ligation देते हैं। / Purification can reduce ligation inhibitors. Clean compatible ends give better ligation.

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