(Biyoloji) Arkebakteri, Monera içinde gerçek peptidoglikan yapıları olmayan ve bazı özellikleri bakımından bakterilerden ayrı bir grup olarak tanımlanan, aşırı sıcak, aşırı tuzlu ortamlarda yaşayabilen mikroorganizmalar. Önceden Archaebacteria olarak adlandırılırdı
İngilizce - İngilizce
archaean teriminin İngilizce İngilizce sözlükte anlamı
of, or relating to the geologic eon from about 3,800 to 2,500 million years ago; comprises the Eoarchean, Paleoarchean, Mesoarchean and Neoarchean eras; marked by an atmosphere with little oxygen, the formation of the first continents and oceans and the emergence of simple life
A group of prokaryotic single-celled microorganisms that constitute the recently recognized Archaea phylogenetic domain Archaea can be distinguished from bacteria in that their cell walls do not have murein, a peptidoglycan-containing muramic acid Another unique feature of archaea is the presence of isopranyl ether lipids in their cell membranes The Archaea domain includes the methanogens, most extreme halophiles (needing salt for growth), certain sulfate reducers, hyperthermophiles (optimum growth temperature of 80C or higher), and the genus Thermoplasma