| Term | Definition |
| nucleus | control center of the cell; contains DNA |
| cell membrane | regulates what enters and leaves the cell |
| ribosomes | where proteins are made |
| mitochondria | converts chemical energy into usable energy |
| cytoplasm | jelly-like; space between cell membrane and organelles |
| Golgi apparatus | sorts, packages materials like proteins for export |
| chloroplast | where photosynthesis occurs in plant cells |
| vacuole | sac-like structure; stores water in plant cells |
| endoplasmic reticulum (ER) | transports proteins throughout the cell |
| cell wall | support for plant cells; contains cellulose |
| lysosome | contain enzymes for cellular digestion |
| organelle | specialized intracellular structures |
| cytoskeleton | assists in maintaining cell shape & movement |
| centrioles | help organize animal cell division |
| cell | basic structural & functional unit of life |