Caffeine is an inhibitor of phosphodiesterase. Therefore, the cells of a person who has recently consumed coffee would have increased levels of
A) phosphorylated proteins.
B) GTP.
C) cAMP.
D) adenylyl cyclase.
E) activated G proteins.

Question

Quizplus · Accepted Answer

Caffeine inhibits phosphodiesterase, which normally breaks down cAMP. Therefore, cells of a person who has recently consumed coffee would have increased levels of cAMP.

Caffeine Is an Inhibitor of Phosphodiesterase