Nucleic Acids - Mock Test 36

Question 351

Reverse transcriptase catalyses?

A) Synthesis of RNA B) Breakdown of RNA C) Synthesis of DNA D) Breakdown of DNA

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Question 352

All of the following statements about RNA-dependent DNA polymerase are true excep?

A) It synthesizes DNA using RNA as a template B) It is also known as reverse transcriptase C) It synthesizes DNA in 5’→3’ direction D) It is present in all the viruses

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Question 353

3’→5’ Exonuclease activity of DNA polymerase ?

A) Removes ribonucleotides B) Adds deoxyribonucleotides C) Corrects errors in replication D) Hydrolyses DNA into mononucleotides

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Question 354

DNA polymerase I possesses?

A) Polymerase activity B) 3’→5’ Exonuclease activity C) 5’→3’ Exonuclease activity D) All of these

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Question 355

DNA polymerase III holoenzyme possesses?

A) Polymerase activity B) 3’→5’ Exonuclease activity C) 5’→3’ Exonuclease and polymerase activities D) 3’→5’ Exonuclease and polymerase activities

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Question 356

Reverse transcriptase activity is present in the eukaryotic?

A) DNA polymerase α B) DNA polymerase γ C) Telomerase D) DNA polymerase II

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Question 357

Negative supercoils are introduced in DNA by?

A) Helicase B) DNA ligase C) DNA gyrase D) DNA polymerase III holoenzyme

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Question 358

DNA fragments are sealed by?

A) DNA polymerase II B) DNA ligase C) DNA gyrase D) DNA topoisomerase II

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Question 359

Ribonucleotides of RNA primer are replaced by deoxyribonucleotides by the enzyme?

A) DNA polymerase I B) DNA polymerase II C) DNA polymerase III holoenzyme D) All of these

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Question 360

Deoxyribonucleotides are added to RNA primer by?

A) DNA polymerase I B) DNA polymerase II C) DNA polymerase III holoenzyme D) All of these

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