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Chemically hormones are

1. biogenic amines only
2. proteins, steroids and biogenic amines
3. proteins only
4. steroids only

Correct answer: proteins, steroids and biogenic amines

Solution

Hormones are not all one chemical type. They include peptide/protein hormones, steroid hormones, and biogenic amines, so the broadest correct choice is the one that includes all three classes.

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