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  4. The factor which does not affect the rate of alveolar diffusion is

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Q. The factor which does not affect the rate of alveolar diffusion isBiology Question Image

KEAMKEAM 2011Breathing and Exchange of Gases

Solution:

$O_2$ and $CO_2$ are exchanged in the alveoli by simple diffusion. The factors that affect the diffusion are pressure gradient of the gases, solubility of the gases and the thickness of the membranes involved in diffusion.