| A | B |
| cell | basic unit of life |
| cell membrane | phospholipid layer that covers a cell's surface |
| organelle | small structures located inside the cell |
| nucleus | membrane-bound organelle that contain's the cells DNA |
| prokaryote | single cell that does not have a nucleus |
| eukaryote | cells that have a nucleus enclosed by a membrane |
| cell wall | rigid structure that gives support to the cell |
| ribosome | site of protein synthesis |
| endoplasmic reticulum | system of channels for transport of materials throughout the cell |
| mitochondria | organelle involved in cellular respiration |
| golgi complex | organelle for making and packaging materials |
| vesicle | small cavity in a eukaryotic cell |
| lysosome | organelle that contains digestive enzymes |
| tissue | group of similar cells that perform a common function |
| organ | collection of tissue that carry out a speicalized function |
| organ system | group of organs that work together |
| organism | anything that can carry out life processes |
| structure | arrangement of parts in an organism |
| function | special, normal or proper activity of an organ or part |