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

DNA polymerase I

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RNA polymerase

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DNA polymerase III

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Helicase

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Solution

The correct option is B RNA polymerase
RNA polymerase is capable to unwind the DNA as well as polymerise ribonucleotides during transcription.

During replication, unwinding of DNA helix is done by helicase. DNA polymerase catalyse DNA synthesis only.

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Similar questions

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

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 DNA replication.

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

Q. Polymerisation of DNA nucleotides during the synthesis of lagging strand occurs in

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

The correct option is B RNA polymeraseRNA polymerase is capable to unwind the DNA as well as polymerise ribonucleotides during transcription. During replication, unwinding of DNA helix is done by helicase. DNA polymerase catalyse DNA synthesis only.

The correct option is B RNA polymerase
RNA polymerase is capable to unwind the DNA as well as polymerise ribonucleotides during transcription.

During replication, unwinding of DNA helix is done by helicase. DNA polymerase catalyse DNA synthesis only.