Active Transport Learning Targets 8-11

1. Active Transport Learning Targets 8-11

2. Active Transport Recall… There are 2 ways to move molecules into and out of the cell. Passive Transport-DOES NOT require ENERGY from the cell. Molecules move from areas of high concentration to low concentration by random kinetic motion. Active Transport-REQUIRES ENERGY to be used by the cell. Molecules are moved from areas of low concentration to high concentration with the use of PROTEINS

3. Active Transport • Like facilitated diffusion, it uses PROTEINS, called pumps. • The proteins will change shape like those in facilitated diffusion also do. • The cell must use energy (ATP) to move the molecules. • Can move small molecules and ions against the concentration gradient • Like Na+, K+, and Ca2+ • One example is a Sodium-Potassium Pump

4. Example Active Transport Animation

5. Endocytosis & Exocytosis(Active Transport) Q: Can active transport bring in LARGE molecules too? A: Yes, through 2 processes called ENDO- and EXOCYTOSIS

6. Active Transport Endocytosis Exocytosis Reverse process of endocytosis Endo- and Exocytosis Animation • Cell membrane folds in • The pocket of the cell membrane breaks loose from the cell membrane • The pocket becomes a vacuole -Can use the method to take in large molecules, clumps of food or whole cells

7. Active Transport v. Passive Transport

8. Active Transport v. Passive Transport