Cells That Respond to Peptide Hormones Usually Do So Through

question 22

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

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