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restriction-enzymes MCQ Questions for Class 11

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

Practice Questions

116 questions tagged with restriction-enzymes.

Restriction enzymes naturally bacteria में किस काम आते हैं?

What is the natural role of restriction enzymes in bacteria?

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A. foreign DNA से defenseDefense against foreign DNA

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Bacteria restriction enzymes से foreign DNA को काट सकते हैं। यह defense mechanism है। / Bacteria can cut foreign DNA using restriction enzymes. This is a defense mechanism.

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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

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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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यदि किसी cloning plan में insert को सही दिशा में लगाना है तो कौन सी strategy बेहतर होगी?

If an insert must be placed in the correct direction in a cloning plan which strategy is better?

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A. दो अलग restriction enzymes से directional cloningDirectional cloning with two different restriction enzymes

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दो अलग ends insert को एक दिशा में लगाने में मदद करते हैं। परीक्षा में directional cloning को orientation control से जोड़ें। / Two different ends help place the insert in one direction. In exams link directional cloning with orientation control.

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Restriction enzymes को किस biological role से खोजा गया था?

Restriction enzymes were discovered in relation to which biological role?

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A. bacterial defense against foreign DNA

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Bacteria restriction enzymes से foreign DNA को काट सकते हैं। यह natural defense mechanism है। / Bacteria can cut foreign DNA using restriction enzymes. This is a natural defense mechanism.

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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

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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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डीएनए cutting का exam-safe summary क्या है?

What is the exam-safe summary of DNA cutting?

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A. restriction enzymes DNA को specific sites पर काटकर fragments बनाते हैंRestriction enzymes cut DNA at specific sites to make fragments

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Restriction enzymes molecular scissors की तरह काम करते हैं। Sticky या blunt ends recombinant DNA formation में उपयोगी होते हैं। / Restriction enzymes work like molecular scissors. Sticky or blunt ends are useful in recombinant DNA formation.

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डीएनए काटने में मुख्य एंजाइम कौन से होते हैं?

Which enzymes are mainly used for cutting DNA?

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A. प्रतिबंध एंजाइमRestriction enzymes

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प्रतिबंध एंजाइम डीएनए को खास स्थानों पर काटते हैं। परीक्षा में इन्हें molecular scissors याद रखें। / Restriction enzymes cut DNA at specific sites. In exams remember them as molecular scissors.

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Directional cloning में दो अलग restriction enzymes क्यों उपयोग किए जा सकते हैं?

Why can two different restriction enzymes be used in directional cloning?

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A. Insert को सही दिशा में जोड़ने के लिएTo join insert in correct orientation

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दो अलग enzymes अलग ends बनाते हैं। इससे insert की direction control करना आसान होता है। / Two different enzymes make different ends. This makes it easier to control insert direction.

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कौन सा enzyme molecular scissors के विपरीत joining role निभाता है?

Which enzyme plays a joining role opposite to molecular scissors?

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C. DNA ligase

Explanation

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Molecular scissors restriction enzymes को कहा जाता है क्योंकि वे DNA काटते हैं। DNA ligase opposite joining role निभाता है। / Restriction enzymes are called molecular scissors because they cut DNA. DNA ligase performs the opposite joining role.

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Ligase enzyme का कौन सा statement false है?

Which statement about ligase enzyme is false?

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D. It cuts DNA at palindromic recognition sites

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Palindromic recognition sites पर DNA काटना restriction enzymes का काम है। Ligase joining enzyme है। / Cutting DNA at palindromic recognition sites is the role of restriction enzymes. Ligase is a joining enzyme.

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Self-ligation को कम करने की एक रणनीति क्या है?

What is one strategy to reduce self-ligation?

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D. दो अलग restriction enzymes से अलग सिरे बनानाMaking different ends with two restriction enzymes

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दो अलग सिरे vector के अपने आप जुड़ने की संभावना घटा सकते हैं। यह directional cloning में उपयोगी है। / Two different ends can reduce the chance of vector self-joining. This is useful in directional cloning.

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Self-ligation को कम करने का एक तरीका क्या हो सकता है?

What can be one way to reduce self-ligation?

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A. दो अलग restriction enzymes से अलग सिरे बनानाMaking different ends with two restriction enzymes

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दो अलग ends vector के अपने आप जुड़ने की संभावना घटा सकते हैं। यह directional cloning में उपयोगी है। / Two different ends can reduce the chance of vector self-joining. This is useful in directional cloning.

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Restriction Enzymes topic का सबसे सुरक्षित exam summary क्या है?

What is the safest exam summary of the Restriction Enzymes topic?

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A. specific DNA cutting bacterial enzymes useful in cloning

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Restriction enzymes bacteria से जुड़े specific DNA cutters हैं। इन्हें recombinant DNA और cloning से जोड़कर याद रखें। / Restriction enzymes are bacteria-linked specific DNA cutters. Remember them with recombinant DNA and cloning.

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किस option में restriction enzymes का board-level definition सही है?

Which option gives the board-level definition of restriction enzymes?

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A. specific DNA sequences को cut करने वाले bacterial enzymesBacterial enzymes that cut specific DNA sequences

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यह definition source और function दोनों बताती है। Class 11 exam में यही सबसे उपयोगी definition है। / This definition gives both source and function. It is the most useful definition for Class 11 exams.

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किस option में restriction enzymes को पढ़ने का best table heading है?

Which option is the best table heading for studying restriction enzymes?

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A. enzyme source recognition sequence end type

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Restriction enzyme questions में source sequence और end type पूछे जा सकते हैं। इन्हें table form में revise करना उपयोगी है। / Restriction enzyme questions may ask source sequence and end type. Revising them in table form is useful.

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किस option में restriction enzyme का incorrect application है?

Which option is an incorrect application of restriction enzymes?

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C. starch digestion

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Restriction enzymes DNA analysis और recombinant DNA में उपयोगी हैं। Starch digestion के लिए amylase जैसे enzymes होते हैं। / Restriction enzymes are useful in DNA analysis and recombinant DNA. Enzymes like amylase are used for starch digestion.

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किस option में restriction enzyme का correct application है?

Which option is a correct application of restriction enzymes?

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A. gene cloning

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Gene cloning में restriction enzymes vector और insert DNA को cut करने में उपयोगी हैं। यह biotechnology application है। / In gene cloning restriction enzymes help cut vector and insert DNA. This is a biotechnology application.

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कौन सा statement restriction enzyme के बारे में सही नहीं है?

Which statement is not correct about restriction enzymes?

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D. वे मुख्य रूप से glucose synthesis enzyme हैंThey are mainly glucose synthesis enzymes

Explanation

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Restriction enzymes glucose synthesis enzymes नहीं हैं। उनका मुख्य कार्य DNA cutting है। / Restriction enzymes are not glucose synthesis enzymes. Their main role is DNA cutting.

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एक enzyme same recognition sequence पहचानता है पर दूसरे enzyme से अलग cut position देता है। उसे क्या कहा जा सकता है?

An enzyme recognizes the same recognition sequence but cuts at a different position from another enzyme. What can it be called?

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B. neoschizomer

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Neoschizomers same sequence recognize कर सकते हैं लेकिन cut position अलग हो सकती है। यह terminology-based question है। / Neoschizomers can recognize the same sequence but may cut at different positions. This is a terminology-based question.

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HindIII के लिए सही option कौन सा है?

Which option is correct for HindIII?

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A. HindIII-AAGCTT

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HindIII AAGCTT recognition sequence से जुड़ा है। यह EcoRI और BamHI से अलग है। / HindIII is linked with the AAGCTT recognition sequence. It is different from EcoRI and BamHI.

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किस option में BamHI का सही मिलान है?

Which option correctly matches BamHI?

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A. BamHI-GGATCC

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BamHI GGATCC sequence पहचानता है। इसे restriction enzyme examples में याद रखें। / BamHI recognizes the GGATCC sequence. Remember it among restriction enzyme examples.

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कौन सा अंतिम revision point सबसे सही है?

Which final revision point is most correct?

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A. Restriction enzymes bacteria से जुड़े DNA cutting tools हैंRestriction enzymes are bacteria-linked DNA cutting tools

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Restriction enzymes का source bacteria और function DNA cutting है। यही easy level का सबसे important summary है। / The source of restriction enzymes is bacteria and the function is DNA cutting. This is the most important easy-level summary.

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palindrome recognition का restriction enzyme से क्या संबंध है?

What is the relation of palindrome recognition with restriction enzymes?

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A. कई restriction enzymes palindromic DNA sites पहचानते हैंMany restriction enzymes recognize palindromic DNA sites

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कई recognition sites palindromic होते हैं। यह restriction enzymes की sequence recognition से जुड़ा है। / Many recognition sites are palindromic. This is linked with sequence recognition by restriction enzymes.

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restriction enzyme किस bond को DNA backbone में काटता है?

Which bond does a restriction enzyme cut in the DNA backbone?

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A. phosphodiester bond

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Restriction enzymes DNA के sugar-phosphate backbone में phosphodiester bonds काटते हैं। यह DNA structure से जुड़ा fact है। / Restriction enzymes cut phosphodiester bonds in the sugar-phosphate backbone of DNA. This fact is linked with DNA structure.

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कौन सा option restriction enzyme use की correct application नहीं है?

Which option is not a correct application of restriction enzyme use?

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D. starch cooking

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Restriction enzymes DNA-related techniques में उपयोगी हैं। Starch cooking उनका application नहीं है। / Restriction enzymes are useful in DNA-related techniques. Starch cooking is not their application.

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HindIII और EcoRI में क्या समानता है?

What is common between HindIII and EcoRI?

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A. दोनों restriction enzymes हैंBoth are restriction enzymes

Explanation

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HindIII और EcoRI दोनों DNA cutting restriction enzymes हैं। इनके recognition sequences अलग हैं। / HindIII and EcoRI are both DNA-cutting restriction enzymes. Their recognition sequences are different.

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restriction enzyme action के बाद gene cloning में अगला joining enzyme कौन सा है?

After restriction enzyme action which joining enzyme is next in gene cloning?

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A. DNA ligase

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DNA ligase cut DNA fragments को जोड़ता है। परीक्षा में cut और join enzymes अलग पहचानें। / DNA ligase joins cut DNA fragments. In exams distinguish cutting and joining enzymes.

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कौन सा exam tip restriction enzymes के लिए सबसे उपयोगी है?

Which exam tip is most useful for restriction enzymes?

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A. enzyme name source recognition sequence और end type साथ याद करेंRemember enzyme name source recognition sequence and end type together

Explanation

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Restriction enzymes के प्रश्नों में source sequence और sticky या blunt ends पूछे जा सकते हैं। इन्हें एक साथ revise करें। / Questions on restriction enzymes may ask source sequence and sticky or blunt ends. Revise them together.

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कौन सा कथन palindromic DNA sequence के लिए सही है?

Which statement is correct for a palindromic DNA sequence?

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A. दोनों strands पर opposite direction में same पढ़ा जा सकता हैIt can read same on both strands in opposite direction

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कई restriction enzymes palindromic DNA sequences पहचानते हैं। यह recognition site का common feature है। / Many restriction enzymes recognize palindromic DNA sequences. This is a common feature of recognition sites.

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DNA fingerprinting में restriction enzymes का संभावित योगदान क्या है?

What is a possible contribution of restriction enzymes in DNA fingerprinting?

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A. DNA fragments का pattern बनानाCreating a pattern of DNA fragments

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Specific cutting से DNA fragment pattern बनता है। यह DNA comparison में उपयोगी हो सकता है। / Specific cutting creates a DNA fragment pattern. This can be useful in DNA comparison.

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