| A | B |
| Plasma membrane | Outer boundary of the cell |
| Nucleus | Control center of the cell |
| Chromatin | Threadlike strands of DNA floating in the nucleoplasm |
| Cytoplasm | Semifluid substance inside the cell |
| Organelle | Specialized structures in a cytoplasm |
| Endoplasmic reticulum | Mazelike membrane system that moves materials in the cell |
| Ribosomes | Organelles that make protein |
| Golgi apparatus | Sorts, packags, and delivers modified proteins and lipds |
| Mitochondria | Power house of the cell which releases energy |
| Lysosomes | Organelles that contain digestive chemicals |
| Cells | Basic unit of structure and function in living things |
| Nuclear envelope | Double membrane that surrounds the nucleus |
| Rough ER | Endoplasmuc reticulum with attached ribosomes |
| Smooth ER | Endoplasmic reticulum without attached ribosomes |
| Cellular respiration | Process of breaking down glucose to produce ATP |
| Cytoskeleton | Protein fibers within the cytoplasm that anchor organelles |
| Diffusion | Random movement of molecules from are of high to low concentation |
| Osmosis | Diffusion of water across a plasma membrane |
| Fluid-mosaic model | Description of plasma membrane structure |
| Selectively permeable | Description of plasma membrane function |
| Hypotonic | Solution outside of cell containing more water |
| Hypertonic | Solution outside of cell containing less water |
| Isotonic | Solution outside of cell containing equal amount of water |
| Cilia and Flagella | Organelles involved with movement |
| Vesicles | Small membrane sacs that store or transport substances |