| A | B |
| Centrosome | Area of cytoplasm that coordinates the building and breaking of microtubules |
| Cytoplasm | Gel-like internal substance of a cell, including the watery intracellular fluid and the many organelles suspended in it |
| Endoplasmic Reticulum | Network of membranous tubules and besicles located deep inside the cytoplasm |
| Golgi Apparatus | Membraneous organelle that processes and packages protein molecules |
| Mitochondria | Organelles containing enzymes essential for making ATP |
| Nucleus | Large, membranous structure within a cell, contains DNA |
| Plasma Membrane | Membrane that separates the contents of a cell from the surrounding tissue fluid |
| Ribosome | Nonmembraneous structure whose function is protein synthesis |
| Lysosomes | Vesicles that have pinched off from the Golgi apparatus |
| Peroxisomes | Serve to detoxify harmful substances that may enter cells |