| Term | Definition |
| Nucleus | Directs the activity of the cell and stores DNA |
| Plasma Membrane | Outer membrane of the cell that lets things in and out of the cell |
| Mitochondria | Converts chemical energy stored in food into compounds more convenient for the cell to use |
| Rough Endoplasmic Reticulum | Responsible for the synthesis and transport of proteins |
| Smooth Endoplasmic Reticulum | Makes sex hormones, lipids and enzymes |
| Golgi Apparatus | Responsible for directing molecular traffic in the cell; modifies, sorts and transfers molecules |
| Ribosomes | Builds/synthesizes proteins |
| Lysosome | Contains enzymes that digest waste and "clean up" the cell |
| Cytoplasm | A fluid that contains all organelles and supports them |
| Chloroplast | Captures energy from sunlight and converts it into chemical energy to supple cell with food |
| Vacuole | Stores materials in a cell |
| Cell Wall | Supports and protects a cell; made of cellulose (fiber) |
| Cilia | Fine hairlike projections from certain cells such as those in the respiratory tract that sweep in unison and help to sweep away fluids and particles. |
| Cytoskeleton | Allows cells to change shape, move, and supports the cell |
| Flagellum | allows cell to move; propels cell (like sperm) |