Which of these substances is the most common second messenger used by hydrophilic hormones
A)calcium
B)cyclic AMP
C)chromatin
D)messenger RNA

Question

Quizplus · Accepted Answer

Cyclic AMP (cAMP) is the most common second messenger used by hydrophilic hormones. When a hydrophilic hormone binds to its receptor on the cell membrane, it triggers the activation of an enzyme called adenylate cyclase, which converts ATP into cAMP. cAMP then activates protein kinase A (PKA), which triggers a cascade of biochemical reactions that ultimately lead to the cellular response to the hormone signal. Calcium is also a common second messenger, but it is typically used by G protein-coupled receptors that activate phospholipase C instead of adenylate cyclase. Chromatin and messenger RNA are not involved in second messenger signaling.

Which of These Substances Is the Most Common Second Messenger