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

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

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

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

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

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

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

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