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Biotechnology Restriction Enzymes MCQ Questions for Class 11 Science

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01 Practice Topic Genetic Engineering 200 MCQs 02 Practice Topic Bioprocess Engineering 300 MCQs 03 Practice Topic Ligase Enzymes 290 MCQs 04 Practice Topic Cloning Vectors 295 MCQs 05 Practice Topic Competent Host 445 MCQs

Restriction Enzymes Practice Questions

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Question 321/345 Easy Biotechnology Principles of Biotechnology Restriction Enzymes Class 11 Level 17

कौन सा option restriction enzymes के handling से जुड़ा सही practical point है?

Which option is a correct practical point about handling restriction enzymes?

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A. उन्हें heat से बचाकर cold condition में रखनाKeep them cold and protected from heat

Explanation

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Restriction enzymes proteins हैं और heat sensitive हो सकते हैं। Cold storage activity को सुरक्षित रखती है। / Restriction enzymes are proteins and can be heat sensitive. Cold storage preserves activity.

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Question 322/345 Easy Biotechnology Principles of Biotechnology Restriction Enzymes Class 11 Level 17

किस option में restriction enzyme का molecular target सही है?

Which option gives the correct molecular target of restriction enzyme?

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Correct Answer

A. DNA phosphodiester backbone

Explanation

Simple Explanation

Restriction enzymes DNA के phosphodiester backbone में cuts बनाते हैं। इसलिए उनका target DNA है। / Restriction enzymes make cuts in the phosphodiester backbone of DNA. Therefore their target is DNA.

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Question 323/345 Easy Biotechnology Principles of Biotechnology Restriction Enzymes Class 11 Level 17

किस word से पता चलता है कि restriction enzyme DNA के अंदर cut करता है?

Which word shows that a restriction enzyme cuts inside DNA?

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Correct Answer

A. endonuclease

Explanation

Simple Explanation

Restriction endonuclease में endonuclease का अर्थ nucleic acid के अंदर cut करना है। यह नाम के अर्थ से जुड़ा fact है। / In restriction endonuclease endonuclease means cutting inside a nucleic acid. This fact is linked with the meaning of the name.

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Question 324/345 Easy Biotechnology Principles of Biotechnology Restriction Enzymes Class 11 Level 17

किस option में restriction enzyme और exonuclease का difference सही है?

Which option correctly gives the difference between restriction enzyme and exonuclease?

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Correct Answer

A. restriction enzyme specific internal cut कर सकता हैRestriction enzyme can make a specific internal cut

Explanation

Simple Explanation

Restriction enzyme endonuclease की तरह internal cut करता है। Exonuclease ends से nucleotides हटाता है। / Restriction enzyme makes internal cuts like an endonuclease. Exonuclease removes nucleotides from ends.

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Question 325/345 Easy Biotechnology Principles of Biotechnology Restriction Enzymes Class 11 Level 17

कौन सा option palindromic sequence का correct idea देता है?

Which option gives the correct idea of a palindromic sequence?

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Correct Answer

A. opposite directions में दोनों strands पर same readingSame reading on both strands in opposite directions

Explanation

Simple Explanation

कई restriction sites palindromic होते हैं। यह restriction enzyme recognition में common feature है। / Many restriction sites are palindromic. This is a common feature in restriction enzyme recognition.

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Question 326/345 Easy Biotechnology Principles of Biotechnology Restriction Enzymes Class 11 Level 17

एक bacteria अपने DNA को methylate नहीं कर पाए तो क्या risk होगा?

If a bacterium cannot methylate its own DNA what risk will occur?

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Correct Answer

A. अपना DNA restriction enzyme से cut हो सकता हैIts own DNA may be cut by restriction enzyme

Explanation

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Methylation self DNA को restriction enzyme से बचाती है। इसके बिना own DNA भी vulnerable हो सकता है। / Methylation protects self DNA from restriction enzymes. Without it self DNA can become vulnerable.

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Question 327/345 Easy Biotechnology Principles of Biotechnology Restriction Enzymes Class 11 Level 17

कौन सा option restriction enzymes के defense role में phage से जुड़ता है?

Which option connects restriction enzymes with phage in defense role?

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Correct Answer

A. phage DNA को cut करनाCutting phage DNA

Explanation

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Bacteria invading phage DNA को cut कर सकते हैं। Restriction enzyme का natural role defense है। / Bacteria can cut invading phage DNA. The natural role of restriction enzymes is defense.

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Question 328/345 Easy Biotechnology Principles of Biotechnology Restriction Enzymes Class 11 Level 17

restriction enzyme के बिना recombinant DNA technique में कौन सा step मुश्किल होगा?

Without restriction enzyme which step becomes difficult in recombinant DNA technique?

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Correct Answer

A. DNA को specific site पर cut करनाCutting DNA at specific site

Explanation

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Recombinant DNA में desired cut sites बनाने के लिए restriction enzymes महत्वपूर्ण हैं। इनके बिना controlled cutting कठिन होती है। / Restriction enzymes are important for making desired cut sites in recombinant DNA. Without them controlled cutting is difficult.

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Question 329/345 Easy Biotechnology Principles of Biotechnology Restriction Enzymes Class 11 Level 17

किस option में restriction enzyme का सही natural plus artificial use है?

Which option gives the correct natural plus artificial use of restriction enzyme?

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Correct Answer

A. bacteria defense और lab cloningBacterial defense and lab cloning

Explanation

Simple Explanation

Natural role bacterial defense है और artificial lab use cloning में है। यह complete concept revision है। / The natural role is bacterial defense and artificial lab use is in cloning. This is complete concept revision.

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Question 330/345 Easy Biotechnology Principles of Biotechnology Restriction Enzymes Class 11 Level 17

अगर vector और insert incompatible ends रखते हैं तो क्या problem होगी?

If vector and insert have incompatible ends what problem will occur?

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Correct Answer

A. joining difficult होगीJoining will be difficult

Explanation

Simple Explanation

Incompatible ends properly base pair नहीं कर पाएंगे। इसलिए ligation efficiency घट सकती है। / Incompatible ends will not base pair properly. Therefore ligation efficiency may decrease.

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