| A | B |
| cell | the smallest unit of life in all living things |
| vacuole | stores food, water, minerals and wastes |
| mitochondrion | converts food energy into a form that the cell can use |
| chromosome | they contain DNA, a chemical that determines which traits an organism will have |
| cytoplasm | a gelantin-like substance that contains many chemicals that the cell needs |
| organ | a structure made up of two or more different types of tissue that work together |
| nucleus | controls most of the cell's activities |
| photosynthesis | process used by plants, algae, and many types of bacteria to make their own food |
| tissue | group of similar cells that all do the same work |
| chloroplast | captures energy from sunlight and uses it to convert carbon dioxide and water into food |