RNA polymerase binds to the promoter and transcribes the ara operon.In the presence of arabinose,both the CAP-cAMP complex and the AraC-arabinose complex must bind to:
A)araO.
B)araI.
C)araA.
D)araB.
E)araD.

Question

Quizplus · Accepted Answer

The correct answer is B) araI. The araI site is the initiator sequence for the ara operon in bacteria, where both the CAP-cAMP complex and the AraC-arabinose complex must bind to initiate transcription in the presence of arabinose. The CAP-cAMP complex facilitates transcription under low glucose conditions, while the AraC-arabinose complex is specific to the presence of arabinose, allowing for the transcription of genes involved in arabinose metabolism.

RNA Polymerase Binds to the Promoter and Transcribes the Ara