Transport across membranes

Diffusion

• Net Movement from Higher concentration to Lower concentration
• Passive Process
• Rate of Diffusion depends on; Concentration gradient (higher the faster rate), Thickness of exchange surface, Surface area, Temperature, Molecule Size

Osmosis

• New Movement of water moleclues over a partially permeamble membrane from a Higher concentration to an area of Lower concentration
• When equillbrium is reached no further…