Breathing and Exchange of GasesHard
Question
The exchange of gases in the alveoli of the lungs takes place by
Options
A.simple diffusion
B.osmosis
C.active transport
D.passive transport
Solution
Oxygen diffuses from alveoli to deoxygenated blood and CO2 diffuese from deocygenated blood to alveoli by simple diffusion. Diffusion is defined as, the flow of the substance (gases) from a region of their higher concentration to a region of lower concentration.
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