NEET UG BIOLOGY MCQ: BREATHING AND EXCHANGE OF GASES

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Partial pressures of oxygen and carbon dioxide in alveoli of healthy human being are, nearest to

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Correct option: C

40 and 45 mm Hg

Option A (104 and 40 mm Hg) is correct because the partial pressure of oxygen in the alveoli is approximately 104 mm Hg, and the partial pressure of carbon dioxide is approximately 40 mm Hg.

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