1. Cell Membrane Formative

2. 1. Where would you expect to find water based on this diagram of a cell membrane?2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

3. 2. Which statement best describes the area #1:
A nonpolar phosphate head
A polar hydrophobic head
A polar hydrophilic head
A nonpolar hydrophilic head 1 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

4. 3. Based on this diagram of a cell membrane, where is the nonpolar region located?1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

5. 4. Which of the following pictures shows the proper orientation of phospholipids in a cell membrane?
Picture Choice 1
Picture Choice 2
Picture Choice 3
Picture Choice 4 B. C. D. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

6. 5. Where in the membrane would you expect to find hydrophobic substances:1 2 3 1 2 3
1 and 2
1 and 3
AB. 2 and 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

7. 6. Location that represents a channel protein:B C D A B C D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

8. 7. The protein pictured below is best described as a:
Channel protein
Receptor protein
Carrier protein
Integral protein 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

9. 8. The molecule identified in the following diagram:
Allows proteins to enter and exit the cell
Is part of the fatty acid tails
Is polar
Controls membrane movement
The Molecule 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

10. 9. The following picture best describes the process of:
Osmosis
Diffusion 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

11. LET’S GO BACK TO THE DEMONSTRATION FROM YESTERDAY AND DISCUSS THE DIFFERENCE BETWEEN DIFFUSION AND OSMOSIS!!!!

12. 10. The following diagram represents the process of: (Answer all that apply)
Osmosis
Diffusion
The movement of a substance from a high to low concentration
Movement of Molecules
Cell Membrane
IODINE

13. The following diagram represents the process of:
Osmosis
Diffusion
Why doesn’t the sucrose move??? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

14. Let’s play with some real cell membranes!
LAB TIME!!!!!!!!