Which of the Following is NOT a Common Intracellular Second

Question

Which of the following is NOT a common intracellular second messenger?
A)inositol 1,4,5-trisphosphate (IP₃)
B)1,2 diacylglycerol (DAG)
C)adenosine triphosphate (ATP)
D)3´-5´ cyclic guanine monophosphate (cGMP)

Accepted Answer

While ATP is an important molecule for energy transfer within cells, it is not considered a common intracellular second messenger. The other options - IP₃, DAG, and cGMP - are all recognized second messengers involved in intracellular signaling pathways.