An example of a hormone that exerts its action within the target cell only by interacting with cell-surface receptors is
A)insulin.
B)cortisol.
C)testosterone.
D)estrogen.
E)progesteronE.

Question

Quizplus · Accepted Answer

Insulin interacts with cell-surface receptors and activates a cascade of intracellular signals that regulate glucose uptake and metabolism. It does not enter the cell or interact with intracellular receptors. Cortisol, testosterone, estrogen, and progesterone, on the other hand, can cross the cell membrane and interact with either intracellular or cell-surface receptors to exert their action on target cells.

An Example of a Hormone That Exerts Its Action Within