NEET Zoology Hormone Action Mechanism MCQ Question
Which of the following statements about hormone action mechanisms is correct?
Peptide hormones generate second messengers and usually do not enter the target cell.
Steroid hormones require second messengers to exert their effects on target cells.
All hormones act exclusively through intracellular receptors.
Hormones that interact with membrane-bound receptors can directly alter gene expression.
Correct Answer
Detailed Explanation
Peptide hormones, such as insulin, typically bind to membrane-bound receptors and generate second messengers like cyclic AMP, while steroid hormones usually enter the cell and regulate gene expression directly.
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