Transcriptional regulation in prokaryotes can occur by
A) a repressor binding an operator and preventing transcription.
B) an activator binding upstream from a promoter and positively affecting transcription.
C) different promoter sequences binding RNA polymerase more tightly, resulting in more effective transcriptional initiation.
D) the control of promoter efficiency.
E) All of the above

Question

Quizplus · Accepted Answer

Transcriptional regulation in prokaryotes can occur through a variety of mechanisms, including the binding of repressors to operators to prevent transcription (A), the binding of activators upstream from a promoter to positively affect transcription (B), and differences in promoter sequences that can affect RNA polymerase binding and transcriptional initiation (C). Additionally, the control of promoter efficiency (D) can also play a role in transcriptional regulation. Therefore, all of the choices (A to D) are correct answers to this question.

Transcriptional Regulation in Prokaryotes Can Occur by