Question

The given figure represents the process of transcription in bacteria.

• A. $a-\text{DNA},b-\text{RNA},c-\text{Promoter}$
• B. $a-\text{RNA},b-\text{RNA~polymerase},c-\text{Rho factor}$
• C. $a-\text{RNA},b-\text{RNA~polymerase},c-\text{Sigma~ factor}$
• D. $a-\text{DNA},b-\text{DNA~polymerase},c-\text{RNA}$

Answer 1

The correct option is B $a-\text{RNA},b-\text{RNA~polymerase},c-\text{Rho factor}$

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 releases when the $Rho$ factor binds to the enzyme $RNA$ polymerase to terminate the transcription.