Solved UPSC CDS/OTA Question
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Q · Respiratory System Medium · 45s
Consider the following regarding the exchange of gases: 1. Oxygen diffuses from alveoli into pulmonary capillaries. 2. CO₂ diffuses from tissues into tissue capillaries. 3. Partial pressure gradients drive the diffusion process. Which is/are true?
TopicRespiratory System
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Gas exchange is by simple diffusion along partial pressure gradients.
Final Answer: Option D — 1, 2 and 3