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RNA Primase

In bacteria, ...

Question

In bacteria, which enzyme catalyses the transcription of all types of RNA (mRNA, tRNA and rRNA)

A

DNA dependent RNA polymerase

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B

DNA dependent DNA polymerase

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C

RNA dependent RNA polymerase

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D

RNA dependent DNA polymerase

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Solution

The correct option is B DNA dependent RNA polymerase
In most prokaryotes, a single DNA dependent RNA polymerase species transcribes all types of RNA (mRNA, tRNA and rRNA) but its specificity is controlled by sequence-specific DNA promoters.
Hence, the correct answer is 'DNA dependent RNA polymerase'

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Similar questions

Q. In transcription, against which strand of DNA does the DNA dependent RNA polymerase catalyse the process?

Q. The enzyme DNA dependent RNA polymerase and DNA dependent DNA polymerase catalyse the polymerisation reaction in ___(i)_____ and ___(ii)_____ direction, respectively.

Q. How many of the following statements are correct ?

A. DNA dependent DNA polymerase requires DNA primer for initiating replication but DNA dependent RNA polymerase does not require any primer for transcription.

B. DNA dependent DNA polymerase requires RNA primer for initiating replication but DNA dependent RNA polymerase does not require any primer for transcription.

C. During replication, unwinding of DNA double helix forms a fork-like structure called replication fork.

D. During transcription, unwinding of the DNA double helix by DNA dependent RNA polymerase forms a transcription bubble.

E. During transcription, unwinding of DNA double helix by DNA dependent RNA polymerase forms a transcription fork.

Q. DNA dependent RNA polymerase catalyzes transcription on the strand of the DNA which is called the

Q. Choose the correct answer from the alternatives given :
The enzyme DNA dependent RNA polymerase catalyses the polymerisation reaction in ________ direction.

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