1. No energy is used [High]  [Low] (it’s the natural flow) This means it goes down a concentration gradient

2. What are the three types of passive transport? 1. Diffusion 2. Osmosis 3. Facilitated Diffusion

3. Diffusion [High]  [Low]

4. Osmosis

5. Facilitated Diffusion + CH 2 OH OH

6. Energy is used [Low]  [High] This means it goes up or against a concentration gradient

7. What are the three types of active transport? 1. Protein pumps 2. Endocytosis 3. Exocytosis

8. Protein Pumps store Protein Pumps: proteins use energy to pull or pump materials into or out of the cell to stockpile or store substances the cell needs

9. Different Types of Membrane Proteins (page 126) TRANSPORTERSRECEPTORSENZYMES SIGNAL/ RECOGNITION

10. Different Types of Membrane Proteins (page 126) signal/recognition Enzymes receptor transporter 2. 3. 4. 5.

11. When a particle is engulfed into the cell. 2 types 1.Phagocytosis: When a cell wraps part of its membrane around a large particle forming a “pocket” or vesicle 2.Pinocytosis: The same process, but with smaller particles or liquids Endocytosis

12. 1.A vesicle carrying a substance 2.fuses with the cell membrane 3.and releases the substance Exocytosis