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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'

Biology

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