| A | B |
|---|
| nucleus | command and control center |
| ribosomes | manufacture proteins and polypeptides |
| lysosomes | "suicide sacs" that digest old organelles and invaders |
| mitochondria | powerhouse that gives the cell energy |
| chloroplasts | use light, water, & carbon dioxide to make food |
| rough endoplasmic reticulum | transports protein |
| smooth endoplasmic reticulum | transports lipids |
| cell membrane | decides what comes into and goes out of the cell |
| cell wall | helps plant cells be rigid so plants can get tall |
| Golgi apparatus | packages, refines, and exports proteins |
| nucleolus | makes ribosomes |
| vacuole | stores water, food, or wastes |
| microtubules | skeleton of the cell |
| microfilaments | muscles of the cell |
| diffusion | random movement of molecules from high to low concentrations |
| facilitated diffusion | proteins in cell membrane help diffusion happen |
| active transport | movement of molecules against the concentration gradient |
| endocytosis | any movement of molecules or particles into the cell |
| exocytosis | any movement of molecules or particles out of the cell |
| osmosis | diffusion of water across cell membranes |
| eukaryotic | cells that have a nucleus and membrane bound organelles |
| prokaryotic | primitive cells without nuclei and membrane bound organelles |
| selectively permeable | allows some things to pass through but not others |
| cytoplasm | the cell stuff outside the nucleus |
