Consider this pathway:
Adrenaline → G protein-coupled receptor → G protein → adenylyl cyclase → cAMP
The second messenger in this pathway is ________.

Question

Quizplus · Accepted Answer

The second messenger in this pathway is cAMP, which is produced by adenylyl cyclase when activated by the G protein. The G protein-coupled receptor and G protein are both involved in transmitting the signal, but they do not serve as the second messenger.

Consider This Pathway: Adrenaline → G Protein-Coupled Receptor → G Protein → Adenylyl