TRANSPORT IN CELLS
Looks at HOW all the substances which a cell needs or produces move in and out of it.

PASSIVE TRANSPORT


DIFFUSION

OSMOSIS

OSMOSIS is the Simple DIFFUSION of WATER molecules.

DIFFUSION_of_water_across_a_semi_perm_membrane.jpg
water molecules passing through a selective membrane

REMEMBER - Osmosis is ONLY how WATER MOLECULES diffuse!

Here's an annotated diagram explaining the process of OSMOSIS:
Osmosis2.jpg