Cells That Respond to Peptide Hormones Usually Do So Through

Multiple Choice

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) the hormone receptor complex moves into the cytoplasm as a unit
B) hormones alter cellular operations through stimulation of a gene directly
C) G protein acts as the link between first and second messengers
D) peptide hormones always enter the cell membrane and elicit a response without assistance from other messengers