Page 11 - Osmosis and Diffusion - FULL

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What Is Di
usion?

Diffusion is the movement of a gas or solute molecules from an area where there are many
to an area where there are few, until they spread evenly throughout a space. This movement
can occur across a cell membrane or outside of cells.

dye Demonstrating the Process of Di
usion

water

The color dye di
uses throughout the water in the beaker until there is an
even distribution of molecules.

waste
waste

cell membrane
cell membrane

Organisms use the
process of diffusion to
allow useful molecules to
enter cells and to remove
waste products.

nutrient A
nutrient
Amoeba
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