Which of the following happen when cAMP binds to the catabolite activator protein (CAP)?

Question

Quizplus · Accepted Answer

When cAMP binds to CAP, it changes its shape and enables it to bind to a specific site upstream of the lac operon. This complex of cAMP-CAP then enhances the binding of RNA polymerase to the promoter, increasing transcription of the genes. Therefore, choice C is correct. The other options are incorrect: A is opposite of what happens, B is incorrect because increased transcription means an increase in the synthesis of beta-galactosidase, and D is also opposite of what happens because the lac repressor would stay on the operator if cAMP-CAP didn't bind.

Which of the Following Happen When CAMP Binds to the Catabolite