1. Cellular Membrane & Transport (Ch. 7-3)
What is the circled molecule that makes up the bilayer of our cell membranes?
Outside
of cell
Inside
(cytoplasm)
Cell
membrane
Proteins
Protein
channel
Lipid bilayer
Carbohydrate
chains
Cellular Membrane & Transport (Ch. 7-3) 1 1

2. The polar HEADS of the phospholipid bilayer face inside/outside of the cell and are said to be __________________ because of their affinity for water.

3. The cell membrane allows certain materials to pass through and other materials NOT to pass through. This is called what?

4. What process does this animation depict?

5. Molecules moving automatically from HIGH concentration to LOW concentration is called __________________?

6. Diffusion is the movement of molecules ________ a concentration gradient?

7. Diffusion continues until a point of ___________________, when molecules are equally dispersed through an area.

8. The use of proteins to transport LARGE molecules through membranes is called __________________________.

9. What type of facilitated diffusion is the seen here?

10. What type of facilitated diffusion is seen here?

11. Name ONE molecule that uses carrier proteins to pass through a cell membrane.

12. Name ONE ion that uses a channel to pass through a cell membrane.

13. What molecule uses aquaporins to pass through a cell membrane?

14. What specific form of active transport does this animation show?

15. Write the ion that is transported by this proton pump?

16. What type of transport is shown here?

17. What is this internal “pocket” called?

18. What type of transport is shown here?

19. This is a sugar cube dissolving in water. What is the solvent
This is a sugar cube dissolving in water. What is the solvent? What is the solute?

20. Hypotonic, Isotonic OR Hypertonic?

21. Hypotonic, Isotonic OR Hypertonic?

22. What type of solution is this blood cell being placed in?

23. Why doesn’t a cell membrane allow ALL materials through?

24. Cellular Membrane & Transport (Ch. 7-3)
Sketch a section of a lipid bilayer. Label hydrophilic head, hydrophobic tail and integral protein.
Cellular Membrane & Transport (Ch. 7-3) 24 24