Cell Membrane Formative

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Presentation transcript:

Cell Membrane Formative

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

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

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

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

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

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

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

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

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

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

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

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

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