Which of the following hormones given below would have intracellular receptors?
ACTH
ADH
Melatonin
Aldosterone
A hormone that has intracellular receptors would be Aldosterone. Aldosterone is a steroid hormone that is synthesized in the adrenal cortex and binds to intracellular receptors in target cells. Once inside the target cell, the aldosterone-receptor complex directly alters gene expression and regulates ion transport, particularly sodium and potassium ions, in the kidney and other tissues. Hence, the correct answer is option 4.