hard · MCAT
Insulin is a hormone that regulates blood glucose levels. Which of the following is true regarding its structure and synthesis?
- It is a steroid hormone synthesized from cholesterol in the adrenal cortex.
- It is a small amine hormone derived from the amino acid tyrosine.
- It is synthesized in the nucleus and released directly into the cytoplasm.
- It is a peptide hormone consisting of 51 amino acids across two chains linked by disulfide bonds.
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