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Biology · PYQ NEET UG 2021

हिन्दी

The partial pressures (in mm Hg) of oxygen (\( O_2 \)) and carbon dioxide (\( CO_2 \)) at alveoli (the site of diffusion) are:

  1. \( pO_2 = 159 \) and \( pCO_2 = 0.3 \)
  2. \( pO_2 = 104 \) and \( pCO_2 = 40 \)
  3. \( pO_2 = 40 \) and \( pCO_2 = 45 \)
  4. \( pO_2 = 95 \) and \( pCO_2 = 40 \)

Correct answer · Option 2

\( pO_2 = 104 \) and \( pCO_2 = 40 \)

Explanation

At the alveoli, the partial pressure of \( O_2 \) is 104 mm Hg and \( CO_2 \) is 40 mm Hg.
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