| Term | Definition |
| cell membrane | controls what goes into and out of the cell |
| cytoplasm | gel-like fluid between cell membrane and nucleus |
| nucleus | directs what the cell does; contains chromatin (DNA) |
| vacuole (animal cell) | stores materials |
| vacuole (plant cell) | stores water; helps provide structure |
| nucleolus | produces ribosomes |
| ribosomes | produces proteins (from DNA copies) |
| lysosomes | breaks down old cell parts for recycling; breaks food into smaller parts |
| endoplasmic reticulum | carries proteins and other materials from one part of cell to another |
| golgi body | receives proteins from ER, packages them, and sends them to other parts of the cell |
| mitochondria | converts food into useful energy |
| cell wall | protects and supports plant cell; made of sturdy cellulose |
| chloroplast | traps sunlight to make sugar (food) to store energy |