Question

Which of these is not a steroid hormone?

• A. Aldosterone
• B. Androgen
• C. Estrogen
• D. Thyroxine

Answer 1

Answer: (D)

Thyroxine

A. Aldosterone is a mineralocorticoid hormone secreted from the adrenal cortex. It maintains the electrolyte balance in the body by reducing the loss of sodium through urine and sweat.

B. Androgen is a sexocorticoid produced by adrenal cortex. It stimulates the deposition of protein in muscles and nitrogen retention in males.

C. Estrogen is the female sex hormone secreted from ovarian follicles and stimulate the development of female secondary sex organs.

D. Thyroxine is secreted from thyroid gland. It stimulates the consumption of oxygen by metabolically active tissues and also increases the oxidation of glucose in tissues.

Out of all these hormones, thyroxine is not a steroid hormone. Instead, it is derived from amino acid tyrosine.

So, the correct answer is 'Thyroxine'.