Movement of Molecules in Cells

1. Movement of Molecules in Cells Diffusion Facilitated Diffusion Active Transport Osmosis You will need sound!!!

2. Simple Diffusion

3. Selectively Permeable Membrane

4. Diffusion Summarized DIFFUSION happens because of a CONCENTRATION GRADIENT: when there is a difference in concentration of a particular particle on either side of the membrane. Particles move along the concentration gradient from the area of high concentration to the area of low concentration, until EQUILIBRIUM is reached. The net movement of particles along the concentration gradient is called DIFFUSION

5. FACILITATED DIFFUSION

6. ACTIVE TRANSPORT

7. Passive vs. Active Transport

8. OSMOSIS Outside the cell: High sugar concentration (15 outside vs. 6 inside ) Low water concentration (15 outside vs. 24 inside) Inside the cell: Low sugar concentration HIgh water concentration

9. Osmosis in Plant and Animal Cells