| A | B |
| nucleus | control center |
| ribosome | site of protein synthesis |
| cell membrane | allows only certain molecules through |
| endoplasmic reticulum | intercellular highway |
| golgi apparatus | processing and packaging center |
| mitochondria | produces energy |
| chloroplast | site of photosynthesis |
| nuclear membrane | separates nucleus from the rest of the cell |
| lysosome | sac of enzymes |
| central vacuole | stores water and wastes |
| cytoplasm | internal contents of the cell - surrounds organelles |
| cilia | hairlike structures arranged in packs |
| flagella | long whip like structures used in locomotion |
| cytoskeleton | protein tubules that give cell structure |
| cell wall | give plant cells structure and protection |
| nuclear pore | allows molecules to enter and leave the nucleus |