Q. Among the given names of hormones, how many of them show a physiological response by changing the gene expression after binding with DNA inside the target cells?
Oxytocin, Prolactin, Thyroxine, Calcitonin, Vasopressin, Estrogen, FSH, Cortisol, Testosterone, Adrenaline, Aldosterone

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Solution:

Lipid-soluble hormones enter inside the target cells and binds to their specific intracellular receptors to form H-R complex. This complex finally moves and binds to DNA inside the nucleus causes change in gene expression to give a physiological response. From the given list, five (estrogen, cortisol, aldosterone, testosterone and thyroxine) are steroid or lipid-soluble hormones.