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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 |