| A | B |
|---|
| interstitial fluid | body cells are bathed in a dilute solution |
| C, N, O, N | 4 elements make up all cells |
| plasma membrane | lipid bilayer with proteins and cholesterol embedded |
| hydrophilic | water loving |
| hydrophobic | water hating |
| selectively permeable | allowing certain substances in and out |
| protein | provide passageway for substance that cannot pass through the cell membrane |
| Carbohydrates | receptors for hormones and other chemical messengers |
| Cholesterol | prevent the fatty acids from sticking together |
| Phospholipids | composed of hydrophilic and hydrophobic ends |
| microvilli | tiny fingerlike projections that increase surface area for absorption |
| tight-junction | leak proof sheet that prevents passageway |
| desmosomes | anchors cells together |
| gap junction | allow for communication between cells |
| cytoplasm | cellular material outside the nucleus and inside the plasma membrane |
| cytosol | fluid that suspends other elements |
| nucleus | control center of the cell |
| DNA | blueprint for proteins |
| nucleolus | makes ribosomes |
| Chromatin | condenses to form chromosomes |
