When the operator is unbound, the binding of the CRP-cAMP complex _______ the binding of RNA polymerase at the promoter.
A) prevents
B) decreases
C) increases
D) blocks
E) All of the above are sometimes true, depending on the concentration of lactose.

Question

Quizplus · Accepted Answer

The CRP-cAMP complex acts as an activator that facilitates the binding of RNA polymerase to the promoter, thereby increasing transcription.

When the Operator Is Unbound, the Binding of the CRP-CAMP