which molecule is a first messenger but not a second messenger
Biology · Middle School · Thu Jan 21 2021
Answered on
Correct answer is sodium/mg .
Secondary messengers are intracellular signalling molecules released by the cell in response to exposure of extracellular signalling molecules-the first messengers. Second messengers trigger physiological changes such as proliferation, migration, survival, etc.
Some common secondary messengers are cAMP(Cyclic Adenosine Mono Phosphate), cGMP(Cyclic Guanosine Mono Phosphate), Calcium ion, IP3, etc.