Certified National Pharmaceutical Representative (CNPR) Practice Exam

Steroid hormones are indeed derived from cholesterol. Cholesterol serves as the foundational building block for this hormone type, and through a series of enzymatic processes, it is converted into various steroid hormones. These hormones include cortisol, testosterone, and estrogen, among others. Steroid hormones are characterized by their lipid-soluble nature, allowing them to pass easily through cell membranes and bind to intracellular receptors, which in turn influence gene expression and cellular function.

Amino acid derivatives and peptide hormones, on the other hand, are synthesized from amino acids and do not have a direct link to cholesterol. Amino acid derivatives, such as thyroid hormones and catecholamines, originate from single amino acids, while peptide hormones consist of chains of amino acids that are linked together. Since neither of these types of hormones is derived from cholesterol, they do not fit the question. The option stating "None of the above" is also incorrect because it suggests that no hormone types derive from cholesterol, which is untrue, as steroid hormones do.