| A | B |
| classification | process of grouping things based on their similarities |
| taxonomy | scientific study of how living things are classified |
| binomial nomenclature | 2 part naming system Linnaeus used |
| genus | first word in an organism's scientific name |
| species | group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce |
| prokaryote | organisms whose cells lack a nucleus |
| nucleus | dense area in a cell that contains nucleic acids and it also directs the cells activities |
| eukaryotes | organisms with cells that contain nuclei |