NEET Biology · Medium

Breathing and Exchange of Gases: Diffusion gradient MCQ

Solve this quality-checked NEET multiple-choice question, then review the correct answer and explanation.

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Diffusion gradientMediumQuestion 9280

Question

If the diffusion gradient for oxygen between alveoli and blood falls, oxygen uptake would generally:

  1. A
    Decrease
    Correct
  2. B
    Increase sharply
  3. C
    Remain unrelated
  4. D
    Convert to active transport

Correct answer

Decrease

Explanation

Gas exchange efficiency depends strongly on the partial pressure gradient.