Cell Membrane Coloring Worksheet 1. The cell embrane is also called the ___ membrane and is made of a ____: Plasma, phospholipid bilayer 2. The phospholipids have a ___ and two ____: Hydrophilic (water attracting) polar head and hydrophobic (water repelling) non polar tails 3. The head of a phospholipid is made of an ___ and ___: Alcohol and phosphate 4. The tails are chains of: Fatty acids 5. Phospholipids can move ___ and allow water and other smaller molecules to pass through into and out of the cell , aka diffusion: Sideways 6. Another type of lipid in the cell membrane is ____ that makes the membrane more ____: Cholesterol, fluid 7. Embedded in the phospholipid bilayer are ____ that also aid in diffusion and in cell recognition: Proteins 8. Go all the through the bilayer: Integral proteins 9. Only on one side of the bilayer: Peripheral protein 10. Integral proteins are also called: Channel proteins 11. Four functions of the cell or plasma membrane:: Selective transport, structural support, barrier/protection, and to maintain a balance between the cell and environment 12. Phosphate heads ____ water: Attract 13. Helps maintain flexibility of membrane: Cholesterol 14. Involved in cell to cell recognition: Glycoprotein and glycolipid 15. Repels water: Fatty acid tails 16. Make up the bilayer: Phosphate heads and fatty acid tails 17. Help transport certain materials across the cell membrane: Integral protein, peripheral protein, and glycoproteins 18. what way does water move across membranes: Down the concentration gradient 19. Solute bigger outside: Hypertonic 20. Solute bigger inside: Hypotonic 1/1