Question

Which one of the following accurately describes the Lac operon?

a. The repressor protein binds to the operator when lactose is present.
b. The repressor is freed from the operator when lactose is present.
c. RNA polymerase transcribes the lac genes when lactose isn't present.
d. RNA polymerase is prevented from transcribing the lac genes when lactose is present.

Answer 1

The repressor protein binds to the operator when lactose is present. -accurately describes the Lac operon.

Step-by-step explanation:

Answer 2

the answer in which you are trying to find is b. The reason i know is because I have token the test it is right