| A | B |
| You body must get rid of | Waste |
| Spray air freshener in a room | Example of diffusion |
| Water diffuses freely through the | Cell membrane |
| The process by which molecules tend to move from an area of higher concentration to an area of lower concentration. | Diffusion |
| Osmosis and diffusion are types of | passive transport |
| Passive transport | Doesn't require energy |
| The diffusion of water molecules through a selectively permeable membrane is called | osmosis |
| The movement of materials through a cell membrane requiring energy | Active transport |
| Openings on the undersides of leaves | stomata |
| The main method by which small molecules move into and out of cells is | diffusion |
| If the concentration of water molecules outside of a cell is lower than the concentration of water inside, the cell will | shrink |
| A high concentration of water molecules outside the cell will cause the cell to | swell |