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Question 9293
NEET Biology · Hard

Breathing and Exchange of Gases: Altitude MCQ

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

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AltitudeHardQuestion 9293

Question

At high altitude, shortness of breath can occur initially because:

  1. A
    Atmospheric oxygen partial pressure is lower
    Correct
  2. B
    Lungs lose all alveoli
  3. C
    CO2 disappears from blood
  4. D
    Pleura fills with bile

Correct answer

Atmospheric oxygen partial pressure is lower

Explanation

Reduced oxygen partial pressure at altitude lowers the diffusion gradient for oxygen uptake.

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