| A | B |
|---|
| Vesicle | Sac involved in transporting substances in the cell. |
| Lysosome | Sac that contains digestive enzymes that break down food or wastes. |
| Smooth Endoplasmic Reticulum | System of channels formed by folded membrane; highway system; lipids made here. |
| Golgi bodies | Packages proteins for export to other cells. |
| Nuclear envelope | Membrane that surrounds the nucleus. |
| Cytoplasm | Fluid in cell that surrounds organelles. |
| Vacuole | Sac that stores food or water. |
| Plasma membrane | Controls movement of substances in and out of the cell; it's selectively permeable |
| Mitochondrion | Provides the cell with energy by breaking down glucose during cellular respiration. |
| Centrioles | Pair of structures that assist the cell in cell division. |
| Nucleus | Directs cellular activities; contains chromosomes. |
| Nucleolus | Ribosomes made here. |
| Chromosomes | Contains genetic information; made of DNA; found in nucleus. |
| Ribosomes | Site of protein-making; located on Rough E.R. or floating in cytoplasm. |
| Rough Endoplasmic Reticulum | System of channels formed by folded membrane; highway system; "dotted with ribosomes". |
| Microtubules | Protein rods extending across the cell; give internal support. |
