| A | B |
| selectively permeable | Controls the ease of which a substance can pass |
| peripheral proteins | a protein attached to the exterior or interior of the cell membrane |
| intergral proteins | The proteins that are embedded in the bylayer |
| nuclear matrix | maintains its shap with the help of a protein skeleton |
| nucleus | most prominent structure within a eukaryotic cell and stored hereditary information and where RNA is copied |
| chromatin | a combination of DNA an protein inside the nuclear envelope (fine strands of DNA) |
| chromosomes | DNA and protein in a coiled, rod-shaped form that occurs during cell division (short strands of DNA) |
| nuclear pores | small holes in the nuclear envelope |
| nucleolus | The site where ribosomes are synthesized and partially assembles before they pass through the nuclear pares the the cytosol |
| Golgi apparatus | The processin, packaging, and secreting organelles of the cell |
| lysosomes | "suicide sacs" digests old cell organelles and other germs |
| cytoplasm | the region of a cell between the cell membrane and the nucleus |
| cytosol | gelatin-like aqueous fluid that organelles are bathed in |
| ER | functions porimarily as a highway which moves molecules |
| cytoskeleton | a network of long protein strands located in teh cytosol that provide support |
| ribosomes | makes protein |
| mitochondria | "powerhouse" releases energy |
| Cilia | (hair) cause movement |
| flagella | (tails) cause movement |
| cell walls | helps support and protect the plant, and contains long chains of cellulose; found only in a plant cell |
| vacuoles | fluid-filled organells store enzymes adn metabolic wastes; helps keep plant standing (found only in a plant cell) |
| plastids | store starch or fats, and others cantain pigments (found only in a plant cell) |
| chloroplast | a plasid containing chlorophyl; and site for photosynthesis |