Kids Safe Encyclopedia Search. Safe Wiki for Kids.     

   web | images | video | facts | wiki | news | games | kidztube | apps






Not Finding Your Answer?
Post It On KidzTalk Homework Help


   Report a search problem







COMPANY RESOURCES LINKS SOCIAL
contact us education daily journal home facebook
about us make us your default search kidztalk twitter  
terms/privacy blocking websites kidznet pinterest  
advertise teacher zone wiki    
media link to us learning sites    
business / api solutions add a site image search    
affiliate program kidzsearch apps kidztube    
play youtube on kidzsearch games    
  voice search music    
  report a problem cool facts    
  settings news    
    search help    
       
         










 mobile version

      Copyright 2005-2024 KidzSearch.com 

Archaea (Archaebacteria)
Temporal range: 3.5-0Ga Paleoarchean or perhaps Eoarchean – recent
Halobacteria.jpg
Halobacterium sp. strain NRC-1,
each cell about 5 μm long
Scientific classification e
Unrecognized taxon (fix):Archaea
Kingdoms and phyla
Synonyms
  • Archaebacteria Woese & Fox, 1977
  • Mendosicutes Gibbons & Murray, 1978
  • Metabacteria Hori and Osawa 1979
Colourful archaea at Midway geyser

The Archaea (or Archea) are a group of single-celled organisms. The name comes from Greek αρχαία, "old ones". They are a major division of living organisms.

Archaea are tiny, simple organisms. They were originally discovered in extreme environments (extremophiles), but are now thought to be common to more average conditions. Many can survive at very high (over 80 °C) or very low temperatures, or highly salty, acidic or alkaline water. Some have been found in geysers, black smokers, oil wells, and hot vents in the deep ocean. Recent research has found ammonia-eating archaea in soil and seawater.

In the past they had been classed with bacteria as prokaryotes (or Kingdom Monera) and named archaebacteria, but this is a mistake. The Archaea have an independent evolutionary history and show many differences in their biochemistry from other forms of life. They are now classified as a separate domain in the three-domain system. In this system, the three distinct branches of evolutionary descent are the Archaea, Bacteria and Eukaryota.

 view more...

Old&Odd: Archaea, Bacteria&Protists - CrashCourse Biology #35

Old&Odd: Archaea, Bacteria&Protists - CrashCourse Biology #35
more videos...