| A | B |
| General characteristics used to classify organisms into kingdoms | Unicellular or multicellular; heterotroph or autotroph; prokaryotic or eukaryotic; sexual or asexual reproduction |
| Unicellular | An organism composed of only one cell |
| Multicellular | An organism composed of many cells |
| Sexual reproduction | 2 parents; offspring receive 50% of the DNA from each parent; slow reproduction rate |
| Asexual reproduction | 1 parent; offspring receive 100% of the parent's DNA; fast reproduction rate |
| Autotroph | An organism that can manufacture its own food |
| Heterotroph | An organism that has to get its food (cannot manufacture its food) |
| Photosynthesis | The process by which the energy from the sun is used by an organism to make chemical energy (sugar). |
| Chemosythesis | The process by which organic compounds (sugars) are made using the chemical reactions from the Earth; typically takes place near hydrothermal vents |
| Prokaryotic cell | Cell without a nucleus; primitive cell |
| Eukaryotic cell | Cell with a nucleus; DNA is contained within the nucleus; more advanced |
| Eubacteria | Prokaryotic; unicellular; can be autotrophs or heterotrophs; most common bacteria; found everywhere |
| Archaebacteria | Unicellular; prokaryotic; found in extreme environments |
| Protista | Cannot be classified as an animal plant or fungus; Eukaryotic; autotroph and heterotroph; ex. Slime mold; protozoa; primitive algae |
| Fungi | Multicellular; Eukaryotic; heterotroph; ex. Yeast, mushrooms, ringworm |
| Plantae | Multicellular; Eukaryotic; autotroph; provides food for heterotrophs |
| Animalia | Multicellular; eukaryotic; live everywhere; heterotrophs. |
| Regeneration | A special form of asexual reproduction where the organism can replace a lost part or produce an entirely new organism from the lost part. |
| Budding | A form of asexual reproduction where a new organism develops from an outgrowth on the parent and then separates after it is mature. |
| Cell division | A form of asexual reproduction where a cell grows and divides forming two daughter cells that are identical to the parent cell. |