The movement of molecules from areas of high concentration to low concentration

Movement of water molecules from high concentration of water to low concentration

Allows any molecules to diffuse across membrane

Allows certain molecules to diffuse across membrane Ex.cell membrane

Allows no molecules to diffuse across membrane Ex.cell wall

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Cells and Diffusion

Part A

Term	Definition
Diffusion	The movement of molecules from areas of high concentration to low concentration
Osmosis	Movement of water molecules from high concentration of water to low concentration
Permeable	Allows any molecules to diffuse across membrane
Semi-Permeable	Allows certain molecules to diffuse across membrane Ex.cell membrane
Non-Permeable	Allows no molecules to diffuse across membrane Ex.cell wall