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Question 9219
NEET Biology · Easy

Breathing and Exchange of Gases: Diffusion MCQ

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

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DiffusionEasyQuestion 9219

Question

Gas exchange across the alveolar membrane occurs mainly by:

  1. A
    Simple diffusion
    Correct
  2. B
    Active transport
  3. C
    Endocytosis
  4. D
    Facilitated osmosis

Correct answer

Simple diffusion

Explanation

Oxygen and carbon dioxide move down their partial pressure gradients across the respiratory membrane.

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