medium · MCAT bio-biochem
A clinician is comparing the mechanism of action between a newly discovered peptide hormone and a known steroid hormone.
Which of the following characteristics is uniquely associated with the steroid hormone?
- It is synthesized from cholesterol and travels through the blood bound to carrier proteins.
- It exerts rapid, short-lived effects on the target cell's own metabolism directly.
- It is stored in secretory vesicles within the cell body and released via exocytosis.
- It binds to a specific cell-surface receptor and triggers an intracellular second messenger cascade.
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