1. Set up Cornell Notes on pg. 33 Topic: 3
Set up Cornell Notes on pg. 33 Topic: 3.5 Active Transport Essential Question: Explain how exocytosis and endocytosis differ from diffusion
3.5 Active Transport
2.1 Atoms, Ions, and Molecules
Explain how exocytosis and endocytosis differ from diffusion
Key Concept: Cells use energy to transport materials that cannot diffuse across a membrane

2. Endocytosis
Exocytosis
Endo vs. Exocytosis: Double-Bubble
Pg. 32

3. 3.5 Active Transport, Endocytosis, and Exocytosis
KEY CONCEPT Cells use energy to transport materials that cannot diffuse across a membrane.

4. 3.5 Active Transport, Endocytosis, and Exocytosis
Active transport requires energy input from a cell and enables a cell to move a substance against its concentration gradient.
Drives molecules from a region of lower concentration to a region of higher concentration
Low
High
Low High

5. 3.5 Active Transport, Endocytosis, and Exocytosis
Energy=(ATP).
Uses transport protein pumps.
Cells use active transport to maintain homeostasis (balance).

6. 3.5 Active Transport, Endocytosis, and Exocytosis
Phagocytosis is a type of endocytosis in which the cell membrane engulfs large particles.
Endocytosis is the process of taking material into the cell.
Draw on the top of pg. 32

7. 3.5 Active Transport, Endocytosis, and Exocytosis
Exocytosis is the process of expelling material from the cell.
Opposite of endocytosis
Draw on the middle of pg. 32

8. 3.5 Active Transport, Endocytosis, and Exocytosis
Homework:
On the bottom of pg. 32:
Please create a double-bubble comparing and contrasting exocytosis and endocytosis