Question

The given table enlists various hormones and their chemical nature. Select the option which completes the table.

Hormone	Chemical composition
(i)	Peptide
Testosterone	(ii)
Thyroxine	(iii)
(iv)	Amino-acid derivative

• A. (i)-Cortisol, (ii)-Steroid, (iii)-Polypeptide, (iv)-Estradiol
• B. (i)-Oxytocin, (ii)-Protein, (iii)-Iodothyronin, (iv)-Epinephrine
• C. (i)-Cortical, (ii)-Protein, (iii)-Amine, (iv)-Estradiol
• D. (i)-Oxytocin, (ii)-Steroid, (iii)-Iodothyronine, (iv)-Epinephrine

Answer 1

The correct option is D (i)-Oxytocin, (ii)-Steroid, (iii)-Iodothyronine, (iv)-Epinephrine

(i) Peptides: These hormones are further of two types: Short peptide and long peptide.

Short peptide: The hormones oxytocin and vasopressin from the posterior lobe of the pituitary gland.

Long peptide: The hormones insulin and glucagon from the pancreas.

(ii) Steroid: The hormones from adrenal cortex, testes, ovaries and placenta are steroids. So, testosterone is a steroid.

(iii) Amino acid derivative: The hormones epinephrine and norepinephrine from the adrenal medulla and thyroxine from the thyroid gland are derived from the amino acid tyrosine.

So, the correct answer is '(i)- Oxytocin, (ii)- Steroid, (iii)- Iodothyronine, (iv)- Epinephrine'.