Which of the following statements about hormones is correct?
A. Steroid hormones all have four carbon rings with different side chains.
B. Non-steroid hormones activate an enzyme cascade.
C. Non-steroid hormones are either modified amino acids, peptides, proteins, or glycoproteins.
D. Steroid hormones regulate the production of a particular protein.
E. All of the choices are correct.
Answer: E
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