Cells that respond to peptide hormones usually do so through a sequence of biochemical reactions involving receptor and kinase activation. In order for cells to respond, it is necessary for first and second messengers to communicate. This is possible because .
A) hormones alter cellular operations through direct stimulation of a gene
B) peptide hormones are converted by cell membranes enzymes into second messengers
C) G protein acts as the link between first and second messengers
D) the hormone receptor complex moves into the cytoplasm as a unit

Question

Quizplus · Accepted Answer

G proteins act as intermediaries that transmit signals from peptide hormone receptors on the cell surface to second messengers inside the cell, facilitating the cellular response.

Cells That Respond to Peptide Hormones Usually Do So Through