easy · MCAT bio-biochem
A 22-year-old patient with Type 1 diabetes is prescribed exogenous insulin to manage blood glucose levels.
Which of the following correctly describes the chemical nature of insulin?
- A steroid hormone derived from cholesterol.
- A small nonpolar molecule that freely crosses cell membranes.
- A peptide hormone consisting of 51 amino acids.
- An amine hormone derived from a single tyrosine residue.
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