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Biotechnology Cutting of DNA MCQ Questions for Class 11 General

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01 Practice Topic Isolation of DNA 294 MCQs

Cutting of DNA Practice Questions

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Question 251/592 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 50

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

Explanation

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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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Question 252/592 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 50

Bacterial host अपने DNA को अपने restriction enzyme से कैसे बचाता है?

How does bacterial host protect its own DNA from its restriction enzyme?

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A. methylation द्वाराBy methylation

Explanation

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Host DNA methylation own recognition sites को protect कर सकती है। Foreign unmethylated DNA cut हो सकता है। / Host DNA methylation can protect its own recognition sites. Foreign unmethylated DNA can be cut.

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Question 253/592 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 50

Restriction modification system में modification क्या दर्शाता है?

What does modification show in restriction modification system?

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A. host DNA methylation

Explanation

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Modification part host DNA को methylate करके protection देता है। Restriction part foreign DNA काटता है। / The modification part protects host DNA by methylation. The restriction part cuts foreign DNA.

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Question 254/592 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 50

Restriction enzyme naming में organism source क्यों पूछा जा सकता है?

Why can organism source be asked in restriction enzyme naming?

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A. नाम source organism से derived होता हैThe name is derived from source organism

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Restriction enzyme names organism genus species strain और discovery order से जुड़े हो सकते हैं। यह exam fact है। / Restriction enzyme names can relate to organism genus species strain and discovery order. This is an exam fact.

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Question 255/592 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 50

EcoRI नाम में Roman numeral I क्या दिखाता है?

What does Roman numeral I in EcoRI show?

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A. first enzyme discovered from that strain

Explanation

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Roman numeral discovery order बताता है। EcoRI में I first identified enzyme को दर्शाता है। / The Roman numeral indicates discovery order. In EcoRI I indicates the first identified enzyme.

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Question 256/592 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 50

EcoRI जैसे enzyme का common exam identity क्या है?

What is the common exam identity of an enzyme like EcoRI?

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A. restriction endonuclease

Explanation

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EcoRI एक restriction endonuclease है। यह specific sequence पर DNA काटता है। / EcoRI is a restriction endonuclease. It cuts DNA at a specific sequence.

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Question 257/592 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 50

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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Question 258/592 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 50

Restriction site की absence से क्या होगा?

What happens if the restriction site is absent?

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A. enzyme उस DNA को उस site पर नहीं काटेगाThe enzyme will not cut that DNA at that site

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Restriction enzyme को recognition site चाहिए। Site absent होने पर expected cut नहीं मिलेगा। / A restriction enzyme needs a recognition site. If the site is absent expected cut will not occur.

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Question 259/592 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 50

Linear DNA में one cut site होने पर सामान्यतः कितने fragments बनते हैं?

How many fragments generally form from linear DNA with one cut site?

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A. दो fragmentsTwo fragments

Explanation

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Linear DNA में एक cut दो fragments बनाता है। Fragment number cut sites पर निर्भर करता है। / One cut in linear DNA makes two fragments. Fragment number depends on cut sites.

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Question 260/592 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 50

Linear DNA में तीन cut sites हों तो सामान्यतः कितने fragments बनेंगे?

If linear DNA has three cut sites how many fragments generally form?

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B. चार fragmentsFour fragments

Explanation

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Linear DNA में number of fragments usually cut sites plus one होता है। तीन cuts से चार fragments बनते हैं। / In linear DNA number of fragments is usually cut sites plus one. Three cuts make four fragments.

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