| A | B |
|---|
| cell membrane | allows certain particles to enter or leave a cell |
| mitochondria | the powerhouse of the cell; makes energy for the cell |
| cytoplasm | gel-like substance that holds the organelles |
| cell | the basic unit of structure and function in all living things |
| tissue | a group of similar cells working together |
| organ | a group of similar tissues working together |
| organ system | a group of organs working together |
| organelles | small structures within a cell that perform specific functions |
| photosynthesis | process in which plants make their own food |
| cell wall | a rigid structure that surrounds a plant cell |
| unicellular | a single-celled organism |
| multicellular | an organism made up of many cells |
| organisms | all living things |
| lysosome | organelle found in an animal cell only; breaks down food |
| organization of living things | cells, tissues, organs, organ systems |
| nucleus | control center of a cell; contains DNA |
| eukaryote | a cell with DNA in the nucleus |
| prokaryote | a cell with DNA in the cytoplasm |
| structure | the shape of an object |
| function | the purpose of an object |
| vacuole | storage center of a cell; stores water, food, and waste |
