<P> Eukaryota (represented by the Australian green tree frog, left), Bacteria (represented by Staphylococcus aureus, middle) and </P> <P> In biological taxonomy, a domain (Latin: regio), also superkingdom or empire, is the highest taxonomic rank of organisms in the three - domain system of taxonomy designed by Carl Woese, an American microbiologist and biophysicist . According to the Woese system, introduced in 1990, the tree of life consists of three domains: Archaea, Bacteria, and Eukarya . The first two are all prokaryotic microorganisms, or single - celled organisms whose cells have no nucleus . All life that has a nucleus and membrane - bound organelles, and multicellular organisms, is included in the Eukarya . </P>

Which of the following is a domain of life