Which of the given enzymes is capable of opening of DNA helix and polymerisation of nucleotides?

DNA polymerase I

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RNA polymerase

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DNA polymerase II

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DNA polymerase III

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Solution

The correct option is B RNA polymerase

RNA polymerase is capable to unwind the DNA helix along with polymerisation of ribonucleotides during transcription.

DNA polymerase I, II and III are capable of polymerisation of nucleotides only. Helicase unwinds DNA helix during replication.

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Q. Which of the given enzymes of prokaryotes performs dual function i.e., opening of DNA helix and polymerisation of nucleotides?

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Q. Name the enzyme that facilitates opening of DNA helix during DNA replication.

Match the following enzymes of DNA replication with their respective functions:
$\begin{matrix} p . D N A p o l y m e r a s e & i . H e l p s u n z i p t h e D N A d o u b l e h e l i x q . D N A l i g a s e & i i . S e a l s n i c k s b e t w e e n O k a z a k i f r a g m e n t s r . D N A h e l i c a s e & i i i . L a y s R N A p r i m e r s t o w h i c h p o l y m e r a s e c a n a d d n u c l e o t i d e s s . P r i m a s e & i v . A d d s n u c l e o t i d e s t o t h e f r e e 3^{'} e n d o f R N A p r i m e r s \end{matrix}$

Q. Name the enzyme that facilitates opening of DNA helix during transcription.

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Which of the given enzymes is capable of opening of DNA helix and polymerisation of nucleotides?

The correct option is B RNA polymerase RNA polymerase is capable to unwind the DNA helix along with polymerisation of ribonucleotides during transcription. DNA polymerase I, II and III are capable of polymerisation of nucleotides only. Helicase unwinds DNA helix during replication.

The correct option is B RNA polymerase

RNA polymerase is capable to unwind the DNA helix along with polymerisation of ribonucleotides during transcription.

DNA polymerase I, II and III are capable of polymerisation of nucleotides only. Helicase unwinds DNA helix during replication.