diffusion facilitated diffusion osmosis active transport endocytosis exocytosis

1. Facilitated diffusion

2. Spot the difference!

6. Carrier proteins

7. Carrier proteins

9. Ion channel

14. Osmosis Osmosis is a “special kind of diffusion”. It’s when water diffuses from a concentrated area to a less concentrated area through a partially permeable membrane (i.e. one that allows water to move through but not anything else): Water Sugar solution In this example the water molecules will move from left to right (along the concentration gradient) and gradually dilute the sugar solution. This is how water moves into root hair cells

18. Strong sugar solution Medium sugar solution Weak sugar solution Potato cells

20. Water potential formula: Water potential= solute potential + pressure potential

22. Active Transport

23. Spot the difference

32. Endocytosis and Exocytosis

33. Endocytosis

34. Exocytosis