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Chemical Coordination and question bank (Biology)

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Q1.

Which one of the following correctly describes the mode of action of Follicle Stimulating Hormone (FSH) and estrogen?

(A)

FSH interacts with membrane-bound receptor and generates cyclic AMP, while estrogen interacts with intracellular receptor and regulates gene expression

(B)

Both FSH and estrogen regulate gene expression via intracellular receptors

(C)

FSH interacts with intracellular receptor and generates cyclic AMP, while estrogen interacts with membrane-bound receptor and regulates cellular metabolism

(D)

Both FSH and estrogen regulate cellular metabolism via membrane-bound receptors

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Q2.

Osmoreceptors are sensitive to changes in ionic concentrations and volumes of body fluids. Which among the following best describes the function of these osmoreceptors?

(A)

They stimulate hypothalamus to facilitate the release of the anti-diuretic hormone and increase water reabsorption.

(B)

They stimulate atrial wall to release atrial natriuretic factor to induce vasodilation and reduce blood pressure.

(C)

They stimulate pituitary gland to facilitate the secretion of mineralocorticoids to adjust the changes in mineral composition of the body fluid.

(D)

They stimulate renin production to induce vasoconstriction and increase blood pressure.

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