2. Membrane structure and function Membrane Proteins DiffusionOsmosisExocytosis and endocytosis 100 200 300 400 500

3. Lipid bilayer

4. Fluid Mosaic Model

5. 2, lipids, and phospholipids

6. True

7. A phosphate-containing head and two fatty acid tails attached to a glycerol backbone.

8. -Serves as a boundary between the outside environment and the inside of the cell -gives form and shape to cells - Can connect on cell to two or more adjacent cells - -helps vesicles form - (other answers may be acceptable)

9. Adhesion proteins

10. Communication Proteins

11. Receptor Proteins

12. Recognition Proteins

13. Transport Proteins

14. Diffusion

15. It has selective permeability

16. Down

17. Yes

18. The gradient’s steepness, molecular size, temperature, and electric or pressure gradients that may be present.

19. Osmosis

20. hypotonic

21. hypertonic

22. Isotonic

23. Osmotic pressure

24. Exocytosis

25. endocytosis

26. Cell eating

27. yes

28. Move large packets of materials across a plasma membrane.