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restriction-enzyme MCQ Questions for Class 11

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

Practice Questions

73 questions tagged with restriction-enzyme.

Restriction enzyme और CRISPR nuclease में school-level अंतर क्या है?

What is a school-level difference between restriction enzyme and CRISPR nuclease?

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A. restriction enzyme DNA sequence पहचानता है और CRISPR guide RNA से target हो सकता हैRestriction enzyme recognizes DNA sequence and CRISPR can be guided by guide RNA

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Restriction enzymes fixed recognition sites पर cut करते हैं। CRISPR systems guide RNA से target select कर सकते हैं। / Restriction enzymes cut at fixed recognition sites. CRISPR systems can select targets using guide RNA.

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Restriction digestion और genome editing nuclease में basic similarity क्या है?

What is the basic similarity between restriction digestion and genome editing nuclease?

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A. दोनों DNA cutting से जुड़े हो सकते हैंBoth can be related to DNA cutting

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Restriction enzymes और genome editing nucleases DNA cuts कर सकते हैं। लेकिन recognition और use अलग हो सकते हैं। / Restriction enzymes and genome editing nucleases can cut DNA. But recognition and use can differ.

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Rare cutter restriction enzyme से क्या अपेक्षा की जाती है?

What is expected from a rare-cutter restriction enzyme?

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D. कम cut sites और बड़े fragmentsFewer cut sites and larger fragments

Explanation

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Rare cutters लंबी recognition sequence पहचान सकते हैं। इससे DNA कम जगह कटता है। / Rare cutters can recognize longer sequences. Thus DNA is cut at fewer places.

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Dcm methylation किससे संबंधित है?

Dcm methylation is related to what?

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A. cytosine methylation in certain bacterial sequences

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Dcm methylation bacterial DNA में cytosine modification से जुड़ी है। कुछ restriction enzymes इससे प्रभावित हो सकते हैं। / Dcm methylation is linked with cytosine modification in bacterial DNA. Some restriction enzymes can be affected by it.

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Cutting of DNA में सबसे common student mistake क्या हो सकती है?

What can be a common student mistake in Cutting of DNA?

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A. enzyme और recognition site को match न करनाNot matching enzyme and recognition site

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Restriction enzyme तभी cut करेगा जब उसका recognition site मौजूद हो। Enzyme-site matching हमेशा check करें। / A restriction enzyme cuts only if its recognition site is present. Always check enzyme-site matching.

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Palindromic recognition sequence में क्या विशेषता होती है?

What is the feature of a palindromic recognition sequence?

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A. दोनों strands opposite direction में समान पढ़े जाते हैंBoth strands read the same in opposite directions

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कई restriction enzymes palindromic DNA sequences पहचानते हैं। यह recognition specificity की key feature है। / Many restriction enzymes recognize palindromic DNA sequences. This is a key feature of recognition specificity.

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Restriction enzyme को endonuclease क्यों कहा जाता है?

Why is a restriction enzyme called an endonuclease?

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A. क्योंकि यह nucleic acid chain के अंदर cut करता हैBecause it cuts inside a nucleic acid chain

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Endonuclease nucleic acid के internal phosphodiester bonds काटता है। Restriction enzymes इसी group में हैं। / An endonuclease cuts internal phosphodiester bonds in nucleic acids. Restriction enzymes are in this group.

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Restriction enzyme reaction का target molecule क्या है?

What is the target molecule of a restriction enzyme reaction?

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A. DNA

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Restriction enzymes DNA substrate पर काम करते हैं। वे DNA backbone के phosphodiester bonds काटते हैं। / Restriction enzymes act on DNA substrate. They cut phosphodiester bonds in the DNA backbone.

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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

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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 name लिखते समय accuracy क्यों जरूरी है?

Why is accuracy important while writing restriction enzyme name?

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A. गलत enzyme नाम wrong cutting plan दे सकता हैWrong enzyme name can give wrong cutting plan

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EcoRI और EcoRV जैसे names अलग enzymes दिखा सकते हैं। Small name error result बदल सकता है। / Names like EcoRI and EcoRV can represent different enzymes. A small name error can change result.

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अगर DNA methylated है तो कुछ restriction enzymes क्यों fail हो सकते हैं?

Why can some restriction enzymes fail if DNA is methylated?

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A. methylation recognition या cutting रोक सकती हैMethylation can block recognition or cutting

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कुछ enzymes methylated recognition sites नहीं काटते। इसलिए methylation sensitivity देखना जरूरी है। / Some enzymes do not cut methylated recognition sites. Therefore methylation sensitivity must be checked.

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Restriction digestion में enzyme को reaction setup के दौरान ठंडा क्यों रखा जाता है?

Why is the enzyme kept cold during restriction digestion setup?

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A. enzyme stability बनाए रखने के लिएTo maintain enzyme stability

Explanation

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Restriction enzymes heat-sensitive proteins हो सकते हैं। Cold handling activity loss कम करता है। / Restriction enzymes can be heat-sensitive proteins. Cold handling reduces activity loss.

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Restriction enzyme name EcoRI में R किससे संबंधित है?

In the restriction enzyme name EcoRI what does R relate to?

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A. strain designation

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EcoRI नाम organism strain और order of discovery से जुड़ा है। ऐसे naming conventions exam में पूछे जा सकते हैं। / The name EcoRI is related to organism strain and order of discovery. Such naming conventions can be asked in exams.

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Restriction enzyme और exonuclease में basic अंतर क्या है?

What is the basic difference between restriction enzyme and exonuclease?

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A. restriction enzyme specific internal sites काटता है और exonuclease ends से हटाता हैRestriction enzyme cuts specific internal sites and exonuclease removes from ends

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Restriction endonucleases DNA के अंदर specific sites काटते हैं। Exonucleases ends से nucleotides हटाते हैं। / Restriction endonucleases cut specific internal sites in DNA. Exonucleases remove nucleotides from ends.

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RFLP में restriction enzyme क्यों जरूरी है?

Why is restriction enzyme necessary in RFLP?

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B. DNA को specific fragments में काटने के लिएTo cut DNA into specific fragments

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Restriction enzyme DNA को site-specific fragments में काटता है। Fragment pattern variation analysis में use होता है। / Restriction enzyme cuts DNA into site-specific fragments. Fragment pattern is used in variation analysis.

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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

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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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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

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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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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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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

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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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Level 45 Cutting of DNA का सबसे अच्छा revision point क्या है?

What is the best revision point of Level 45 Cutting of DNA?

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A. restriction enzyme recognition site sticky end और gel check याद रखेंRemember restriction enzyme recognition site sticky end and gel check

Explanation

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Cutting of DNA में specific enzyme DNA को predictable fragments में काटता है। Fragments को gel से check किया जाता है। / In Cutting of DNA a specific enzyme cuts DNA into predictable fragments. Fragments are checked by gel.

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किस enzyme से blunt ends बन सकते हैं?

Which enzyme can produce blunt ends?

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A. SmaI जैसे enzymeEnzyme like SmaI

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SmaI blunt end बनाने वाले enzyme का common example है। Enzyme type ends को determine करता है। / SmaI is a common example of a blunt-end producing enzyme. The enzyme type determines the ends.

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Restriction digestion में DNA methylation क्या प्रभाव डाल सकती है?

What effect can DNA methylation have in restriction digestion?

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A. enzyme recognition या cutting को प्रभावित कर सकती हैIt can affect enzyme recognition or cutting

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कुछ restriction enzymes methylated sites नहीं काटते। इसलिए methylation status digestion result बदल सकता है। / Some restriction enzymes do not cut methylated sites. Therefore methylation status can change digestion results.

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Restriction enzyme DNA में कहाँ cut लगाता है?

Where does a restriction enzyme cut DNA?

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B. specific recognition site परAt a specific recognition site

Explanation

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Restriction enzyme DNA की specific recognition sequence पहचानता है। फिर उसी site के पास cut लगाता है। / A restriction enzyme recognizes a specific DNA sequence. It then cuts at or near that site.

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अधिकांश common restriction enzymes के लिए सामान्य incubation temperature क्या माना जाता है?

What is the common incubation temperature for many common restriction enzymes?

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A. लगभग 37 डिग्री सेल्सियसAbout 37 degrees Celsius

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कई common restriction enzymes लगभग 37 डिग्री सेल्सियस पर काम करते हैं। हमेशा specific enzyme की condition देखें। / Many common restriction enzymes work around 37 degrees Celsius. Always check the specific enzyme condition.

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प्रतिबंध एंजाइम डीएनए में किस bond को काटते हैं?

Which bond is cut by restriction enzymes in DNA?

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C. फॉस्फोडाइएस्टर bondPhosphodiester bond

Explanation

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Restriction enzymes DNA backbone के phosphodiester bonds को काटते हैं। इससे DNA fragments बनते हैं। / Restriction enzymes cut phosphodiester bonds in the DNA backbone. This forms DNA fragments.

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कौन सा option vector और restriction enzyme का role सही अलग करता है?

Which option correctly separates vector and restriction enzyme roles?

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A. Vector carries DNA और restriction enzyme cuts DNAVector carries DNA and restriction enzyme cuts DNA

Explanation

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Vector desired DNA को carry करता है। Restriction enzyme vector या insert को defined sites पर काटता है। / A vector carries desired DNA. A restriction enzyme cuts vector or insert at defined sites.

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क्लोनिंग vector में insert डालने के लिए पहले vector के साथ क्या किया जाता है?

What is usually done to a vector before inserting an insert?

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A. उसे restriction enzyme से काटा जाता हैIt is cut with a restriction enzyme

Explanation

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Vector को उचित restriction site पर काटकर insert के लिए जगह बनाई जाती है। फिर ligase joining करता है। / The vector is cut at a suitable restriction site to create space for the insert. Then ligase joins it.

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प्रतिबंध एंजाइम और लाइगेज का सही जोड़ा कौन सा है?

Which pair correctly matches restriction enzyme and ligase?

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D. प्रतिबंध एंजाइम काटता है और लाइगेज जोड़ता हैRestriction enzyme cuts and ligase joins

Explanation

Simple Explanation

प्रतिबंध एंजाइम डीएनए काटता है और लाइगेज डीएनए जोड़ता है। यह क्लोनिंग का मूल अंतर है। / Restriction enzyme cuts DNA and ligase joins DNA. This is a basic difference in cloning.

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कौन सा revision pair सबसे सही है?

Which revision pair is most correct?

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A. restriction enzyme-cut और ligase-joinrestriction enzyme-cut and ligase-join

Explanation

Simple Explanation

Restriction enzyme और ligase का यह pair exam में बहुत useful है। Cutting और joining को अलग-अलग याद रखें। / This pair of restriction enzyme and ligase is very useful in exams. Remember cutting and joining separately.

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कौन सा विकल्प ligase का सही exam tip है?

Which option is a correct exam tip for ligase?

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A. कटना restriction enzyme और जुड़ना ligaseCutting is restriction enzyme and joining is ligase

Explanation

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Exam में restriction enzyme और ligase के role confuse होते हैं। आसान नियम है restriction cuts and ligase joins। / In exams roles of restriction enzyme and ligase are often confused. The easy rule is restriction cuts and ligase joins.

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