1. 10/20/15 Starter: How do passive and active transport help a cell maintain homeostasis? Practice: Glue notes here 10/20/15 Cell Membrane Application/Connection/Exit https://www.youtube.com/watch?v=6fhbbFd4icY Watch video and write 5 facts. 1. 2. 3. 4. 5. Then complete review sheet. Answer questions on exit slide on back. Turn in. Cell Membrane 77 78 EQ: How does structure relate to function in living systems from the organismal to cellular level?

2. Agenda 1. Starter 2. notes 3. Video Review 4. Exit

3. Date Lecture/ Activity/ Lab Page 10/8 Cell Comparisons 61-64 10/9 Cell Writing 65-66 10/13 Eukaryotic and Prokaryotic Cells 67-68 10/14 Eukaryotic and Prokaryotic Poster 69-70 10/15 Osmosis in Eggs 71-72 10/16 Osmosis Lab Day II and Quiz 73-74 10/19 Osmosis Lab Day III 75-76 10/20 Cell Membrane 77-78 Table of Contents

4. Functions 1. Controls what enters / exits cell. 2. Protects cell. 3. Supports cells. Cell Membrane A cell membrane has 3 main functions Cell membrane surrounds cell.

5. Structure 1. Phospholipid bilayer 2. Proteins (integral and peripheral) 3. Carbohydrates Cell Membrane A cell membrane is made of 3 types of organic molecules

6. Most of a cell membrane is made of a phospholipid bilayer a) Double layer of phospholipid molecules. b) Fluid and flexible. c) Allows some small, non-polar molecules through, but blocks large or charged molecules. Cell Membrane Phospholipid bilayer

7. Phospholipid molecules arrange themselves into bilayer because of their special structure. Cell Membrane Phospholipid molecules have a “head” and a “tail” Hydrophilic head “loves” water. Hydrophobic tail “fears” water. H H O H H O

8. Proteins are attached to phospholipid bilayer and perform many functions: a) Integral proteins are attached to membrane. They can transport materials or carry signals in and out of the cell. b) Peripheral proteins temporarily attach to phospholipid bilayer or integral proteins. Cell Membrane Integral and peripheral proteins

9. Some carbohydrate chains are attached to the membrane surface. These help cells identify and recognize each other. Cell Membrane Carbohydrates

10. A cell wall is a hard, flexible extra layer surrounding the cell membrane in some organisms, including:  Plants  Fungi  Some bacteria Cell Membrane Cell Wall

11. Exit : Write on back of Review worksheet 1. Summarize the main functions of a cell membrane and why is this important. The main functions of a cell membrane include… This is important because……………. 2. List and illustrate the main structures of a cell membrane, in terms of phospholipids, proteins and carbohydrates. The main structures of a cell membrane includes… Illustration of cell membrane: … 3. Compare and contrast cell membranes to cell walls. In comparison, a cell membrane and cell wall both _______________________. In contrast, a cell membrane is _____________________________________________, while a cell wall is ___________________________________________________________.

12. 10/20/15 Starter: How do passive and active transport help a cell maintain homeostasis? Practice: Glue notes here 10/20/15 Cell Membrane Application/Connection/Exit https://www.youtube.com/watch?v=6fhbbFd4icY Watch video and write 5 facts. 1. 2. 3. 4. 5. Then complete review sheet. Answer questions on exit slide on back. Turn in. Cell Membrane 77 78 EQ: How does structure relate to function in living systems from the organismal to cellular level?