Question
A hormone binds a receptor on the cell membrane because it cannot easily cross the lipid bilayer. The hormone is most likely:
Select an option. Your answer will be checked instantly.
Correct Answer: A. Peptide hormone
Explanation:
Peptide hormones are water-soluble and usually bind surface receptors, triggering intracellular signaling. Steroid hormones often cross membranes and bind intracellular receptors.
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