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Question 9286
NEET Biology · Easy

Breathing and Exchange of Gases: Exchange MCQ

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

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ExchangeEasyQuestion 9286

Question

The fundamental mechanism of alveolar gas exchange is:

  1. A
    Diffusion down partial pressure gradients
    Correct
  2. B
    Filtration by kidneys
  3. C
    Peristalsis of bronchi
  4. D
    Endocrine signalling

Correct answer

Diffusion down partial pressure gradients

Explanation

No active transport is needed; the gases move according to partial pressure differences.

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