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Single Answer MCQ
Q-00045879

What role do alveoli play during physical activity?

1

Store oxygen

2

Transport carbon dioxide

3

Facilitate gas exchange

4

Filter air

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Answer and Solution

Answer

C. Facilitate gas exchange

Solution:

Alveoli facilitate gas exchange by allowing oxygen to enter the blood and carbon dioxide to leave, which is crucial during physical activities. The other options describe functions that are not associated directly with alveoli.

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