| A | B |
|---|
| Unicellular | Description of an organism consisting of only a single cell |
| Multicellular | Description of an organism consisting of many cells |
| Virus | A small, infectious, parasitic “organism” which can only reproduce by taking over the genetic machinery of a host cell |
| Kingdom Fungi | Eukaryotic and heterotrophic organisms that build cell walls with chitin. |
| Kingdom Protista | Kingdom that includes the single-celled eukaryotic organisms |
| Eukaryotic | Organism made up of cells that have a nucleus and membrane-bound organelles |
| Autotrophic | Organism that is able to use a source of energy to produce its food from inorganic raw materials |
| Heterotrophic | Organism that cannot produce its own food but obtains energy from the foods it eats |
| Kingdom Archaebacteria | Kingdom that includes unicellular prokaryotic organisms without peptidoglycan in their cell walls |
| Kingdom Eubacteria | Kingdom that includes unicellular prokaryotic organisms with peptidoglycan in their cell walls |
| Kingdom Plantae | Multicellular eukaryotic autotrophs that build cell walls with cellulose. |
| Kingdom Animalia | Multicellular eukaryotic heterotrophs that do not have cell walls. |
| Monera | An old name for the Kingdom that includes all prokaryotic organisms (bacteria). |
| Taxonomy | The science of naming organisms and assigning them to groups |
