Diffusion, osmosis and active transport

Diffusion

• passive movement of particles from an area of high concentration to an area of low concentration
• the greater the difference in concentration, the faster the rate of diffusion
• example: oxygen required for respiration diffuses into cells and carbon dioxide produced by respiration diffuses out of cells

Osmosis

• the diffusion of water molecules from a dilute solution to a more concentrated solution through a partially permeable membrane
• (from an area where there's…