AP BIOLOGY

THE CELL

CELL COMMUNICATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The second messenger produced by the action of many protein hormones is:
A
cAMP
B
Adenylate Cyclase
C
G-Protein
D
Epinephrine
Explanation: 

Detailed explanation-1: -So, the correct answer is ‘Cyclic AMP ’

Detailed explanation-2: -So, the correct answer is ‘Cyclic AMP’

Detailed explanation-3: -(A) cAMP is the archetypical second messenger. Its levels increase rapidly following receptor-mediated activation of adenylyl cyclase (AC), which catalyzes the conversion of adenosine monophosphate (AMP) to cAMP.

Detailed explanation-4: -Second messengers are small intracellular molecules that mediate the effects of first messengers, i.e., neurotransmitters and hormones. Some of the important second messengers in the nervous system are cAMP, cyclic guanosine monophosphate (cGMP), diacylglycerol (DAG), inositol trisphosphate (IP3), and Ca2 + ions.

Detailed explanation-5: -Cyclic adenosine monophosphate (cAMP) was the original “second messenger” to be discovered. Its formation is promoted by adenylyl cyclase activation after ligation of G protein–coupled receptors by ligands including hormones, autocoids, prostaglandins, and pharmacologic agents.

There is 1 question to complete.