1. p Transport

2. What is the other name for the Cell Membrane?
Fluid Mosaic Model

4. Concentration Gradient
The difference in concentration of a dissolved substance (solute) in two solutions separated by a membrane

5. Terms You Need To Understand
Simple Diffusion
Molecules spread from high concentration to low concentration
Facilitated Diffusion
Diffusion with help of proteins
Osmosis
Diffusion of water

7. Passive Transport Does osmosis or diffusion require energy?
No, molecules move down, or with the concentration gradient = passive transport!!

8. Facilitated Diffusion
Molecules move down (or with) a concentration gradient with the help of special proteins.

9. Active Transport Requires ATP
Moves against the concentration gradient.

10. Active Transport Example: Sodium-Potassium (Na-K) Pump

11. Endocytosis
Transporting material into a cell by the in-folding of the cell membrane  this process makes a vesicle!

12. 2 Types of Endocytosis
Phagocytosis- Solid particles are ingested into the cell.
Pinocytosis – liquids taken into the cell.

13. Exocytosis
Moves materials out of the cell