| Term | Definition |
| 2 types of taxonomic systems | 3 Domain system, 5 Kingdom system |
| 5 Kingdom system | the oldest Taxonomic system, uses macroscopic observations |
| 3 Domain System | developed using molecular observations and by comparing DNA sequences that determine relatedness among species |
| Archea | unicellular, prokaryotic, hetero and / or autotrophic, live in extreme conditions like undersea vents, oldest form of life, small, |
| Bacteria | always unicellular, hetero and / or autotrophic, live in most ever environments |
| Eukarya | Unicellular or multicellular, auto or heterotrophic, |
| Monera | Prokaryotic, hetero or autotrophic, unicellular, cell wall made of peptidoglycan, |
| Protista | Eukaryotic, Hetero or autotrophic, Unicellular or multicellular, cell wall made of many different materials |
| Fungi | Eukaryotic, Cell wall made of Chitin, Heterotrophic, |
| Plantae | Eukaryotic, Heterotrophic, cell wall made of cellulose, always multicellular |
| Animalia | Eukaryotic, Always multicellular, Always heterotrophic, no cell wall |
| Binomial Nomenclature | the scientific name of an animal written with the Genus first [the genus is always capitalized], and the species, written second [the species name is never capitalized] |
| Order of Taxonomy | Kingdom, Phylum, Class, Order, Family, Genus, Species |