Notebook Check 9/28/12 Chapter 33.1 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 Set up Cornell Notes on pg. 37pg. 37

Topic: 3.5 Active TransportTopic: 3.5 Active Transport

Essential QuestionEssential Question::

Explain howExplain how exocytosis exocytosis and and endocytosisendocytosis differ differ from diffusionfrom diffusion

Don’t forget to add it to Don’t forget to add it to your T.O.Contents!your T.O.Contents!

2.1 Atoms, Ions, and Molecules

Explain how exocytosis and endocytosis differ from diffusion

3.5 Active Transport

Key Concept: Cells use energy to transport materials that cannot diffuse across a membrane

KEY CONCEPT Cells use energy to transport materials that cannot diffuse across a membrane.

3.5 Active Transport, Endocytosis, and Exocytosis3.5 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

3.5 Active Transport, Endocytosis, and Exocytosis3.5 Active Transport, Endocytosis, and Exocytosis

Low

High

Low High

Draw on the top half of pg. 36

• Energy=(ATP).

3.5 Active Transport, Endocytosis, and Exocytosis3.5 Active Transport, Endocytosis, and Exocytosis

• Cells use active transport to maintain homeostasis (balance).

• Uses transport protein pumps.

• Endocytosis is the process of taking material into the cell.

3.5 Active Transport, Endocytosis, and Exocytosis3.5 Active Transport, Endocytosis, and Exocytosis

• Phagocytosis is a type of endocytosis in which the cell membrane engulfs large particles.

Draw on the middle of pg. 36

• Exocytosis is the process of expelling material from the cell. •Opposite of endocytosis

3.5 Active Transport, Endocytosis, and Exocytosis3.5 Active Transport, Endocytosis, and Exocytosis

Draw on the bottom of pg. 36

3.5 Active Transport, Endocytosis, and Exocytosis3.5 Active Transport, Endocytosis, and Exocytosis

Homework:Homework:

On the top of pg. 36:On the top of pg. 36:

Please create a double-bubble comparing and Please create a double-bubble comparing and contrasting exocytosis and endocytosiscontrasting exocytosis and endocytosis