Notebook Check 9/28/12 Chapter 3 3.1 p.24: Tree Map, Double-Bubble, Pro vs. Euk Cell (+15) p.25/27: 3.1 Notes/Questions/Summary (+20) P. 26: Cell Video Notes (+10) 3.2 p. 28: Organelle Booklet (+25) p. 29: 3.2 Notes/Questions/Summary (+20) 3.3 p. 30: Cell Membrane Pictures (+15) p. 31: 3.3 Notes/Questions/Summary (+20) 3.4 p. 32: Diffusion, Osmosis, Solutions Pics (+15) p. 33/35: 3.4 Notes/Questions/Pg. 87 Question 1-4 (+25) p. 34: Osmosis and Diffusion Video Notes/LAB (+20) 3.5 p. 36: Endo vs. Exocytosis pics and double-bubble (+20) p. 37: 3.5 Notes/Questions/Summary (+20) On Pg.38 Worth 225 pts!!!!!!

Explain how perfume or food coloring can be used to describe diffusion?

Diffusion: is the movement of molecules in a fluid or gas from a region of higher concentration to a region of lower concentration. The perfume is in high concentration in the bottle. When it is sprayed into the air, the perfume molecules will spread out into the air where there is a lower concentration of perfume.

Set up Cornell Notes on pg. 37 Topic: 3 Set up Cornell Notes on pg. 37 Topic: 3.5 Active Transport Essential Question: Explain how exocytosis and endocytosis differ from diffusion Don’t forget to add it to your T.O.Contents! 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

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 Draw on the top half of pg. 36 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 middle of pg. 36

3.5 Active Transport, Endocytosis, and Exocytosis Exocytosis is the process of expelling material from the cell. Opposite of endocytosis Draw on the bottom of pg. 36

3.5 Active Transport, Endocytosis, and Exocytosis Homework: On the top of pg. 36: Please create a double-bubble comparing and contrasting exocytosis and endocytosis