| A | B |
|---|
| autotroph | an organism that makes its own food |
| heterotroph | an organism that cannot make its own food |
| prokaryote | organisms whose cells lack a nucleus |
| eukaryote | an organism whose cells contain nuclei |
| unicellular | made up of only one cell |
| multicellular | made up of more than one cell |
| Archaebacteria | prokaryotes; either autotrophic or heterotrophic; unicellular; unique chemical make-up |
| Eubacteria | prokaryotes; autotrophic or heterotrophic; unicellular; different chemical make-up from archaebacteria |
| Protists | eukaryotes; autotrophic or heterotrophic; unicellular or multicellular; members vary greatly |
| Fungi | eukaryotes; heterotrophic; unicellular or multicellular; most feed on dead or decaying organisms |
| Plants | eukaryotes; autotrophic; multicellular; feed almost all of the heterotrophs on Earth |
| Animals | eukaryotes; heterotrophic; multicellular; have different adaptations that allow them to locate, capture, eat, and digest food |
