| A | B |
| this structure helps with cell communication | carbohydrate chains |
| larger molecules must pass through this | proteins channels |
| small molecules like O2 or CO2 will pass | right through the phospholipid bilayer |
| this structure improves the fluidity of cell membrane | cholesterol |
| hydrophobic part of a phospholipid | "tails" |
| because the cell membrane is made of many smaller structures, this term is used | Mosaic |
| cell membranes will only allow specific molecules in or out | selectively permeable |
| the phospholipids are doing this in a membrane | moving up/down, side to side |
| correct model term for the cell membrane | Fluid Mosaic |
| because the phospholipids move, the term ______ Mosaic is used | Fluid |