The water-soluble hormones cannot pass through the plasma membrane;they must rely on ______ messengers within their target cells to mediate their action.
A)second
B)pseudo
C)synaptic
D)interoreceptor
E)kinase

Question

Quizplus · Accepted Answer

Water-soluble hormones cannot pass through the plasma membrane and require the help of secondary messengers, such as cyclic AMP (cAMP) or inositol triphosphate (IP3), to mediate their actions inside the target cells. Therefore, the correct choice is A) second messengers.

The Water-Soluble Hormones Cannot Pass Through the Plasma Membrane;they Must