Hormone Metabolism - Mock Test 18

Question 171

Crystallisation of insulin occurs in the presence of?

A) Chromium B) Copper C) Zinc D) Calcium

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Question 172

Tetany can occur?

A) In primary hyperparathyroidism B) In secondary hyperparathyroidism C) In idiopathic hypoparathyroidism D) After accidental removal of parathyroid glands

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Question 173

A high concentration of PTH in blood causes?

A) Increase in plasma calcium and inorganic phosphorous B) Decrease in plasma calcium and inorganic phosphorous C) Increase in plasma calcium and decrease in plasma inorganic phosphorous D) Decrease in plasma calcium and increase in plasma inorganic phosphorous

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Question 174

Secretion of PTH is regulated by?

A) Hypothalamus B) Anterior pituitary C) Feedback effect of plasma PTH D) Feedback effect of plasma calcium

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Question 175

PTH causes all of the following except?

A) Increased intestinal absorption of calcium B) Increased intestinal absorption of phosphate C) Increased tubular reabsorption of calcium D) Increased tubular reabsorption of phosphate

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Question 176

The second messenger for PTH is?

A) Cyclic AMP B) Cyclic GMP C) Diacylglycerol D) Inositol triphosphate

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Question 177

Half-life of PTH is?

A) A few seconds B) A few minutes C) A few hours D) A few days

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Question 178

Amino acid residues which are essential for the biological activity of PTH are?

A) N-terminal 34 amino acids B) N-terminal 50 amino acids C) C-terminal 34 amino acids D) C-terminal 50 amino acids

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Question 179

The number of amino acid residues in PTH?

A) 51 B) 84 C) 90 D) 115

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Question 180

Parathyroid hormone (PTH) is synthesised in?

A) Chief cells of parathyroid glands B) Oxyphil cells of parathyroid glands C) Para follicular cells of thyroid glands D) Follicular cells of thyroid gland

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