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Dictionary » A » Archaea ArchaeaDefinition noun, singular: archaeon (1) Any of the unicellular microorganisms that is genetically distinct from bacteria and eukaryotes, and often inhabiting extreme environmental conditions. (2) One in the three-domain system (the other are Bacteria and Eukaryota) which includes halophiles (microorganisms that may inhabit extremely salty environments), methanogens (microorganisms that produce methane), and thermophiles (microorganisms that can thrive extremely hot environments)
Archaea or archaebacteria evolved separately from eubacteria and eukaryotes. They are similar with eubacteria in being prokaryotes and lacking distinct cell nucleus. They differ in terms of ribosomal structure, the possession of introns (in some species) and in membrane structure or composition. They are similar to eukaryotes in ways that archaea possess genes and several metabolic pathways that are more closely related to those of eukaryotes: notably the enzymes involved in transcription and translation. They are regarded to be living fossils and survivors of an ancient group of organisms that bridged the gap in evolution between eubacteria and eukaryotes.
Synonym: archaebacteria.
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Results from our forumSynthesis of thermostable Archaeal membraneI just wondered about ether glycerol-lipid bond,phytanyl in monolayer in Archaea..instead of bilayer and esther bond in Bacteria and Eukarya.Can someone recommend me some site with biochemical pathway?
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Questions about cells, atoms, respiratory system... put together into cells. Plant and animal is an oversimplification, and also inaccurate. The two basic cell types are prokaryotic (bacteria and archaea) and eukaryotic (protists, fungi, plants, animals). Multicellular organisms, such as plants and animals, have all sorts of different cell types ...
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Re: Archaea vs BacteriaThis paper explains the difference between Archaea and Bacteria fairly well: http://www.scribd.com/doc/13063682/A-Brief-Treatment-on-the-Status-of-the-Kingdom-Archaea-Within-Science-and-Industry-
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Model marine organisms... Does anybody know where I can obtain some pure cultures of the following: Gram negative marine bacteria Gram positive marine bacteria Marine archaea Marine fungi It doesn't really matter what species they are as long as they can be cultured relatively easily. Any help would be very much appreciated.
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Why is bacteria good?... word: adaptation. Where do you not find bacteria? Besides molten lava, very few places are naturally sterile on Earth. Thanks to the extremohiles (archaea and bacteria), most environments are colonized by living beings.
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