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Question
Which of the following is correct regarding diffusion?
Options:
A .  Diffusion takes place only in gases.
B .  Diffusion takes place only outside the cells.
C .  Osmosis is a special case of diffusion.
D .  Diffusion takes place only in liquids.
Answer: Option C
:
C
Diffusion isthe process of spontaneous movement of a substance from a region of high concentration to a region where its concentration is low.
Movement of substances across small distances in a cell takes place through diffusion. Osmosis is a special case of diffusion
through a selectively permeable membrane.

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