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Question

Which of the following statements is false for Angiotensin.
i. It is a steroid hormone.
ii. Angiotensinogen is converted to angiotensin I by renin
iii. Angiotensin II decreases the release of aldosterone.
iv. Angiotensin II brings about vasoconstriction.
v. It stimulates Na+ reabsorption from the Proximal convoluted tubule.

A
i, ii and iii
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B
i and iii
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C
iii, iv and v
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D
i, iii and v
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Solution

The correct option is B i and iii
Angiotensin is a peptide hormone. Hence, statement i is false. Renin converts Angiotensinogen to angiotensin I . Angiotensin converting enzyme converts Angiotensin I to Angiotensin II. It stimulates the synthesis and release of hormone Aldosterone. So, statement ii is false. Angiotensin II increases the blood pressure by bring about vasoconstriction and also reabsorption of Na+ from the Proximal convoluted Tubule.
So, the correct answer is 'i and iii'

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