1. Do This: Have a seat and get out your notebook.
Series: Cells
S2E4: The Cell Membrane
Objective: Explain the function of the cell membrane
Do This: Have a seat and get out your notebook.

2. The Cell Membrane

3. The Cell Membrane
Cell membranes are made of two lipid layers

4. The Cell Membrane Cell membranes are made of two lipid layers
Lipids have a hydrophilic head and hydrophobic tails

5. The Cell Membrane Cell membranes are made of two lipid layers
Lipids have a hydrophilic head and hydrophobic tails
The tails point to the inside of the membrane

7. B. Functions

8. B. Functions
Forms a boundary

9. B. Functions
Forms a boundary
Controls passage of materials

10. C. The cell membrane is selectively permeable

11. C. The cell membrane is selectively permeable
Some molecules can cross while others cannot.