| A | B |
| cell | basic unit of function and structure for all living things |
| organ | tissues working together |
| tissue | cells working together |
| system | organs working together |
| cell membrane | covering that holds a cell together |
| mitochondira | releases energy from food |
| cell wall | rigid layer that protects the plant cell |
| vacuoles | stores food, wastes, and oxygen |
| nucleus | controls all cell activities |
| cytoplasm | substance that contains chemicals to keep cell functioning |
| chromosomes | contains information for characteristics |
| chlorplasts | make food for the plant |
| diffusion | way that materials move in and out of a cell |
| osmosis | way that water and dissolved materials move in and out of a cell |