| A | B |
| nucleus | contains nearly all the cell's DNA |
| eukaryotes | organisms made of cells that contain nuclei |
| prokaryotes | small, single-celled organisms that do not contain nuclei |
| chromosome | formed from chromatin as a cell divides |
| cytoplasm | fluid portion of the cell outside the nucleus |
| ribosome | made of RNA and protein, this tiny organelle is where protiens are assembled |
| endoplasmic reticulum | processor and transporter of proteins and other macromolecules, the name of this organelle means "network inside the cell" |
| golgi apparatus | named after the Italian scientist who first identified it, this organelle transports and processes proteins and other macromolecules |
| lysosome | referred to as the "clean-up" of the cell |
| cytoskeleton | supporting framework of eukaryotic cells |
| vacuole | saclike structure in cells where materials such as proteins, fats, carbohydrates, and water are stored |
| mitochondrion | produces energy from chemical fuel |
| chloroplast | found only in plants, harvests the energy of sunlight |