Cell Processes

1. Cell Processes GLE 0707.1.5 Observe and explain how materials move through simple diffusion.

2. Bellwork • What do you already know about diffusion and osmosis?

3. Chart • Passive Transport • Selectively Permeable Membrane • Diffusion • Osmosis 2. Active Transport

4. Passive Transport • Movement of molecules through a selectively permeable membrane • Permeable- allows materials to pass through it

5. Selectively Permeable Membrane • Certain materials are able to pass through • not all materials will get through

6. Selectively Permeable

7. Diffusion • Process by which substances move from a higher concentration of that substance to a lower concentration of that substance.

8. Diffusion

10. Concentration Gradient • Gradual difference in the concentration

11. Osmosis • The diffusion of water across the membrane • Ion concentrations need to be the same on both sides of the cell membrane

12. Osmosis

13. Active Transport • Process in which a cell uses energy to transport a substance into and out of the cell.

14. Active Transport