1. Active Transport
Chapter 7.3

2. Active Transport Three types of active transport Cell membrane pumps
Endocytosis
Exocytosis

3. Cell Membrane pumps
Movement of molecules against the concentration gradient
Small molecules and ions carried across membrane with membrane proteins that act like pumps
Calcium
potassium
Sodium

4. Active Transport Pumps
Cells concentrate substance in a particular location even when the forces of diffusion might work to move these substances in the opposite direction
Converts ATP to ADP

5. Active Transport

6. Endocytosis Process of taking material into the cell
Created by an in folding of the membrane
Forms a vesicle
Phagocytosis
Pinocytosis

7. Types of Endocytosis Phagocytosis Pinocytosis Cell eating
Cell drinking

8. Exocytosis Release of material into the extracellular space
Vesicle fuses to membrane to release material