Home/
Competitive Exams/
NEET/
Biology/
Breathing and Exchange of Gases/
Question 9223
NEET Biology · Hard

Breathing and Exchange of Gases: Partial pressures MCQ

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

Timer-based practiceDetailed answer reviewMobile-friendly flow
Partial pressuresHardQuestion 9223

Question

Oxygen diffuses from alveoli into blood because in alveolar air its partial pressure is:

  1. A
    Higher than in deoxygenated blood
    Correct
  2. B
    Lower than in deoxygenated blood
  3. C
    Equal to venous blood always
  4. D
    Unrelated to diffusion

Correct answer

Higher than in deoxygenated blood

Explanation

Diffusion occurs down the partial pressure gradient from alveoli to blood.

Review Breathing and Exchange of Gases notesStart timed chapter practice