| Term | Definition |
| Nucleus | Control center of the cell |
| Mitochondria | Releases energy for the cell |
| Cell wall | Provides protective layer around plant cells |
| Cell membrane | Controls what enters/ exits the cell |
| Cytoplasm | Gel-like filling that organelles are suspended in |
| Golgi bodies | Where the proteins that come from the ER are packaged |
| Endoplasmic Reticulum (ER) | Transport system for proteins |
| Ribosomes | Makes protein for cell |
| Schleiden | Concluded that all plant parts are made of cells |
| Schwann | Concluded that all animals are made of cells |
| Virchow | Said that cells came from preexisting cells |
| Hooke | Discovered cells under a microscope in a slice of cork |