| A | B |
| cell membrane | regulates what enters and exits the cell |
| nucleus | control center - contains DNA |
| DNA | programming information for the cell |
| nucleolus | makes ribosomes; located in the nucleus |
| rough endoplasmic reticulum | synthesize proteins; internal transport system |
| Golgi apparatus | packaging and shipping center for cell products |
| lysosomes | contain powerful enzymes that break down molecules and damaged cell parts |
| mitochondria | "Powerhouse of the cell" - convert food energy to ATP |
| cytoplasm | "cell gel" to suspend the contents of the cell |
| ribosomes | organelles where proteins are assembled |
| smooth endoplasmic reticulum | stores Calcium; internal transport system |
| cytoskeleton | provides internal support for the cell; movement |
| centrioles | structures involved in cell division (mitosis) |
| flagellum | cell movement |