| A | B |
| centrioles/centrosome | cell division forms the spindle fibers |
| nucleus | contains the genetic material (DNA) and ultimately controls the activities of the cell |
| ribosomes | proteins are made here |
| nucleolus | located in the nucleus produces ribosomes |
| rough endoplasmic reticulum | network of tubules that transport material through the cell and are studded with ribosomes |
| smooth endoplasmic reticulum | network of tubules that transport material through the cell where fat are metabolized and drugs detoxified |
| mitochondria | breaks down nutrients into energy the cell can use (ATP) |
| golgi apparatus | packages and stores proteins. |
| lysosomes | digests worn out cell parts and foreign matter |
| cytoskeleton | internal framework that supports and moves the cell |
| cell membrane | serves the same function as skin |
| cytoplasm | all of the material between the cell membrane and the nucleus |