| A | B |
| Hooke | first to observe cells using cork |
| van Leeuwenhoek | invented the microscope |
| Cell Theory | cells are smallest living unit of organisms, all organisms made of cells, cells only come from other cells |
| prokaryote | organims whose cells have no nucleus |
| eukaryote | organism whose cells have a nucleus |
| cell membrane | holds the cell together and separates the inside contents from the outside environment, gives shape |
| cell wall | only in plants, made of cellulose, gives shape |
| nucleus | controls all cell activities, contains DNA |
| nucleolus | inside the nucleus, produces ribosomes |
| ribosomes | site of protein synthesis |
| cytoplasm | jelly like substance that gives shape and acts as shock absorber |
| SER | serves as transport mechanism inside cell |
| RER | contains ribosomes and carries proteins outside of cell |
| golgi apparatus | packages and prepares proteins for cell use |
| vacuole | stores food, water, wastes |
| lysosomes | recycles old cell parts |
| mitochondria | site of cellular respiration, power plant |
| chloroplasts | site of photosynthesis |
| cilia | short hairs used in movement |
| flagella | long, whiplike hairs used in movement |
| chlorophyll | green chemical found in chloroplast |
| semi-permeable | only some materials are able to pass in or out of the cell |