| A | B |
| cell membrane | layer that covers a cell's surface |
| cell | the smallest unit of living things |
| organelle | a small body floating in cytoplasm the performs a specific function |
| nucleus | a membrane-bound organelle that contains a cell's DNA |
| prokaryote | a type of cell that does NOT have a nucleus or specialized organelles |
| eukaryote | a type of cell that has a nucleus and specialized organelles |
| DNA | genetic material that carries cell information |
| flagellum | a whip-like tail that propels prokaryoes through liquid |
| bacteria | common prokaryotes that live all around us and inside us |
| archaea | ancient prokaryotes that live in extremely hostile environments |