As adenyl cyclase increases, the levels of cAMP do what?

Adenyl cyclase is an important enzyme that plays a crucial role in cellular signaling pathways. Its primary function is to convert ATP (adenosine triphosphate) into cAMP (cyclic adenosine monophosphate), which acts as a second messenger in various signaling pathways. Therefore, when adenyl cyclase activity increases, it catalyzes the production of more cAMP from ATP.

Since cAMP is produced in greater quantities as a direct result of increased adenyl cyclase activity, the levels of cAMP correspondingly increase. This rise in cAMP can lead to a cascade of cellular responses, including the activation of protein kinases, which further propagate the signaling process within the cell.

The other options do not accurately represent the biochemical relationship established by adenyl cyclase's function. As such, understanding the role of adenyl cyclase is critical for grasping how signaling pathways operate and how cellular responses are modulated by compounds such as hormones and neurotransmitters.