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archaebacteria

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
ar·chae·bac·te·ri·um  (ärk-bk-tîr-m)
n. pl. ar·chae·bac·te·ri·a
An archaeon.


archaebacteria [ˌɑːkɪbækˈtɪərɪə]
pl n
(Life Sciences & Allied Applications / Microbiology) (formerly) a group of microorganisms now regarded as members of the Archaea See archaean
[from archaeo- + bacteria]
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.archaebacteria - considered ancient life forms that evolved separately from bacteria and blue-green algaearchaebacteria - considered ancient life forms that evolved separately from bacteria and blue-green algae
moneran, moneron - organisms that typically reproduce by asexual budding or fission and whose nutritional mode is absorption or photosynthesis or chemosynthesis
division Archaebacteria - in some classifications considered a kingdom
methanogen - archaebacteria found in anaerobic environments such as animal intestinal tracts or sediments or sewage and capable of producing methane; a source of natural gas
halophil, halophile - archaebacteria requiring a salt-rich environment for growth and survival
thermoacidophile - archaebacteria that thrive in strongly acidic environments at high temperatures


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1977 Carl Woese and George Fox publish a paper in PNAS identifying the third domain of life, the archaebacteria (now commonly called Archaea).
Biologists now argue the case for either five (monera, protista, plantae, fungi, animalia) or six kingdoms (plants, animals, protists, fungi, archaebacteria and eubacteria).
Computer analyses of complete genomes suggest that some archaebacteria employ both eukaryotic and eubacterial mechanisms in translation initiation.
 
 
 
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