Advantages of second messengers include that:
A) the signal can be amplified by making many second messengers.
B) second messengers can freely diffuse to other sites within the cell.
C) a few common second messengers can be used in multiple signaling pathways.
D) All of the above.
E) None of the above.

Question

Quizplus · Accepted Answer

All of the statements are advantages of second messengers. The amplification of the signal is possible because many second messengers can be produced. The diffusion property of second messengers ensures that they can spread throughout the cell and activate multiple target molecules. Furthermore, some second messengers like cyclic AMP (cAMP) or inositol triphosphate (IP3) can be used by different signaling pathways, which saves energy and resources for the cell.

Advantages of Second Messengers Include That