ENDOCRINE ORGANS AND RESPIRATORY SYSTEM
ENDOCRINE ORGANS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which of the following is an example of a second messenger?
|
|
cAMP
|
|
|
GTP
|
|
|
insulin
|
|
|
epinephrine
|
Explanation:
Detailed explanation-1: -Examples of second messenger molecules include cyclic AMP, cyclic GMP, inositol triphosphate, diacylglycerol, and calcium.
Detailed explanation-2: -Second messengers are intracellular signaling molecules. Epinephrine is a hormone that is released into the bloodstream and is thus never inside the cell. cAMP, Ca2+ and IP3 are all examples of second messengers.
Detailed explanation-3: -Another important group of second messengers are the cyclic nucleotides, specifically cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) (Figure 8.7C). Cyclic AMP is a derivative of the common cellular energy storage molecule, ATP.
There is 1 question to complete.