| A | B |
|---|
| Plasma Membrane | A phospholipid bilayer that serves as a selective barrier. |
| Cytoplasm | Organelles suspended in a thick semitransparent, elastic fluid. |
| Cytosol | A thick, elastic, semitransparent fluid. |
| Oganelles | Specialized cell parts. |
| Ribosomes | The site of protein synthesis. |
| Rough Endoplasmic Reticulum | A system of membrane tubes that transports proteins. |
| Smooth Endoplasmic Reticulum | A system of membrane tubes that serves as the sight of protein sythesis. |
| Golgi Apparatus | A stack of membrane sacs that alters and releases proteins in the form of budding vesicles. |
| Mitochondria | The organelle involved in ATP formation. |
| Lysosomes | A small, membrane sack containing digestive enzymes. |
| Centrioles | A pair of organelles involved in the formation of the mitotic spindle. |
| Cilia | Numerous, hair-like projections of the cell membrane serving to move mucus or ova down a tube. |
| Nucleus | The organelle housing the DNA. |
| Chromatin | Thread-like form of DNA. |
| Nucleoli | An organlle located inside the nucleus involved in the formation of ribosomes. |
