Which of the following is a common second messenger used in signaling pathways activated by water-soluble hormones?
A)NO
B)ATP
C)cAMP
D)PTH
E)acetyl CoA

Question

Quizplus · Accepted Answer

Cyclic adenosine monophosphate (cAMP) is a common second messenger used in signaling pathways activated by water-soluble hormones. It is generated by adenylyl cyclase, which is activated by G protein-coupled receptors in response to hormone binding. cAMP then activates several downstream targets, including protein kinase A (PKA), which phosphorylates various proteins and enzymes to initiate specific cellular responses. NO (nitric oxide) is a gas that acts as a signaling molecule in the body, but it is not a second messenger like cAMP. ATP (adenosine triphosphate) is an energy molecule involved in cellular metabolism, but not typically involved in hormone signaling pathways. PTH (parathyroid hormone) is a hormone that regulates calcium homeostasis, but it does not act through cAMP. Acetyl CoA is a molecule involved in energy metabolism, but it is not a second messenger in signaling pathways.

Which of the Following Is a Common Second Messenger Used