Question

The given figure represents the process of transcription in bacteria.
Select the option which correctly labels A, B and C.

• A. A - DNA, B - RNA, C - Rho factor
• B. A - RNA, B - RNA polymerase, C - Rho factor
• C. A - RNA, B - RNA polymerase, C - Sigma factor
• D. A - DNA, B - DNA polymerase, C - Sigma factor

Answer 1

The correct option is B A - RNA, B - RNA polymerase, C - Rho factor

As transcription proceeds the initiation and elongation steps are mediated by the RNA Polymerase enzyme (DNA dependent RNA polymerase). As a result, the RNA transcript is synthesized as a single stranded structure and is release when the Rho factor binds to the enzyme RNA polymerase to terminate the transcription.

So, the correct option is, A - RNA, B - RNA polymerase, C - Rho factor