Consider the following pathway:
Epinephrine → G protein-coupled receptor → G protein → adenylyl cyclase → cAMP
Which of the following molecules serves as the second messenger in this pathway?
A) cAMP
B) G protein
C) adenylyl cyclase
D) G protein-coupled receptor

Question

Quizplus · Accepted Answer

cAMP acts as the second messenger in this pathway, relaying signals from the cell surface to the inside of the cell after the activation of adenylyl cyclase by the G protein.

Consider the Following Pathway