| A | B |
|---|
| Prokaryote | An organism whose cells lack a nucleus and some other cell structures. |
| Eukaryote | An organism whose cells contain a nuclei. |
| Nucleus | The dense area in a eukaryotic cell that contains nucleic acids (DNA), the chemical instructions that direct the cell's activities. |
| Cell | The basic structure and function in an organism. |
| Classification | The process of grouping things based on their similarities. |
| Taxonomy | The scientific study of how living things are classified. |
| Binomial Nomenclature | The system for naming organisms in which each organism is given a unique, two-part scientific name indicating its genus and species. |
| Species | A group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce. |
| Unicellular | Made of a single cell. |
| Multicellular | Consisting of many cells. |
