| Term | Definition |
| cell | (biology) the basic structural and functional unit of all organisms |
| organism | a living thing that has (or can develop) the ability to act or function independently |
| homeostaiss | the maintinence of stable internal conditions in spite of changes in the external environment |
| binomial nomenclature | 2 word system of naming and identifying organisms. It was used by Linnaeus and is in Latin. |
| genus | (biology) taxonomic group containing one or more species |
| phylogeny | The evolutionary history of a species or group of related species |
| kingdom | one of seven biological categories: Monera or Protoctista or Plantae or Fungi or Animalia |
| cell theroy | cells are produced from living things |
| cell wall | strong layer around the cell membrane in plants, algae, and some bacteria |
| cell membrane | thin, flexible barrier around a cell, regulates what enters and leaves the cell |
| cytoplasm | the protoplasm of a cell excluding the nucleus |
| ribosome | small particle of RNA and protein that produces protein following instructions from nucleus |
| organelle | membrane bound structure inside a cell that performs a specific function |
| nucleus | the part of the cell that controls every fuction |
| choroplast | the part of the plant cell that makes food |