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Question

The given table enlists various hormones and their chemical nature. Select the option which completes the table.
HormoneChemical composition
(i)Peptide
Testosterone(ii)
Thyroxine(iii)
(iv)Amino-acid derivative


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

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'.

Biology

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