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science
| Term | Definition |
|---|---|
| cell | the smallest unit of an organism that performs life functions |
| nucleus | a structure found in eukaryotic cells that contain DNA and is responsible for controlling the activities of the cell |
| eukaryotic | a cell containing a membrane - enclosed nucleus and organelles |
| prokaryotic | a cell lacking a nucleus or any other membrane - enclosed organelles |
| unicellular | an organism made up of one single cell |
| multicellular | an organism made up of more than one cell and often made up of different types of cells |
| classification | the process of based on similarities |
| taxonomy | the branch of science that formally names and classifies organisms by their structure, function and relationship |
| domain | the highest and largest rank of grouping organisms three groups; Archaea bacteria, and eukarya |
| DOMAIN BACTERIA | prokaryotic , single- celled organism that lacks a nucleus in its cell |
| domain ARCHAEA | prokaryotic, single- celled organism that lacks a nucleu in its cell and can live in extreme enviroments |
| domain eukarya | or ganisms with cells that contain a nucleus . |
| kingdom | a taxonomic rank below |