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Topic: Archaebacteria

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Archaeabacteria

Archaea

Crenarchaeota

Euryarchaeota

Eubacteria

Cyanobacteria

Archaeoglobi

Bacteria

Bacterium

Korarchaeota

Oomycota

Halobacteria

Extremophile

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	Archaebacteria - Encyclopedia.com
		Archaebacteria, diverse group of bacteria (prokaryotes), sometimes called the archaea and considered a major group unto themselves.
		Archaebacteria are contrasted with the Eubacteria, from which they differ biochemically in the arrangement of the bases in their ribosomal RNA and in the composition of their plasma membranes and cell walls.
		Archaebacteria emerged at least 3.5 billion years ago and live in environments that resemble conditions existing when the earth was young.
	www.encyclopedia.com /doc/1E1-Archaea.html (1020 words)

	Archaea - MSN Encarta
		Before the discovery of archaebacteria, scientists divided all living organisms into prokaryotes (organisms without a cellular nucleus), which consisted primarily of bacteria, and eukaryotes (organisms with a cellular nucleus), which consisted of fungi, plants, and animals.
		Archaebacteria were initially grouped with bacteria because like bacteria, they lack a well-defined nucleus.
		The enzyme that archaebacteria use to fix nitrogen appears to be very ancient and may come from a life form that predates archaebacteria and true bacteria.
	encarta.msn.com /encyclopedia_761556709/Archaea.html (428 words)

	What are Archaebacteria?
		Archaebacteria are a type of prokaryote, that is, a unicellular organism without a cell nucleus.
		Archaebacteria are difficult to classify because they have similarities to both normal bacteria and the larger eukaryotes.
		Archaebacteria were not recognized as a distinct form of life from bacteria until 1977, when Carl Woese and George Fox determined this through RNA studies.
	www.wisegeek.com /what-are-archaebacteria.htm (374 words)

	CiteULike: The neomuran origin of archaebacteria, the negibacterial root of the universal tree and bacterial ...
		The neomuran origin of archaebacteria, the negibacterial root of the universal tree and bacterial megaclassification.
		Archaebacteria and eukaryotes comprise the clade neomura, with many common characters, notably obligately co-translational secretion of N-linked glycoproteins, signal recognition particle with 7S RNA and translation-arrest domain, protein-spliced tRNA introns, eight-subunit chaperonin, prefoldin, core histones, small nucleolar ribonucleoproteins (snoRNPs), exosomes and similar replication, repair, transcription and translation machinery.
		The origin from a drastically altered actinobacterium of neomura, and the immediately subsequent simultaneous origins of archaebacteria and eukaryotes, are the most extreme and important cases of quantum evolution since cells began.
	www.citeulike.org /user/bnchakraborty/article/752914 (1292 words)

	archaebacteria
		Consider the colonies of archaebacteria clustered around this deep sea volcanic vent called a fl smoker: the colonies thrive in complete darkness, without oxygen, surrounded by superheated water, and bathed in a chemical soup of hydrogen sulfide and other dissolved minerals.
		Archaebacteria have a cell type that is described as prokaryotic.
		Examples of archaebacteria include the thermophiles inhabiting the hot springs of Yellowstone National Park, or the halophiles occupying habitats in the Dead Sea.
	facstaff.uww.edu /wentzl/archaebacteria.html (294 words)

	Archaebacteria — FactMonster.com
		Archaebacteria are contrasted with the Eubacteria, from which they differ biochemically in the arrangement of the bases in their ribosomal RNA and in the composition of their plasma membranes and cell walls.
		There are three major known groups of Archaebacteria: methanogens, halophiles, and thermophiles.
		Archaebacteria emerged at least 3.5 billion years ago and live in environments that resemble conditions existing when the earth was young.
	www.factmonster.com /ce6/sci/A0804565.html (174 words)

	The kingdoms archaebacteria and eubacteria
		Archaebacteria are the oldest living organisms on earth.
		Archaebacteria are found in very harsh conditions (such as at the bottom of the sea or in volcanic vents).
		They (and all archaebacteria) are obligate anaerobes, meaning they cannot live in the presence of oxygen.
	co.essortment.com /archaebacteriae_rmkr.htm (935 words)

	Archaebacterial Properties Table
		Prokaryotic organisms (eubacteria and archaebacteria) have ribosomes that are significantly smaller, with fewer protein subunits, than eukaryotic ribosomes.
		Cell walls are found in the cells of eubacteria, archaebacteria, fungi, algae, and plants.
		Some of the archaebacteria exhibit chemolithotrophic metabolisms, obtaining energy from the oxidation of inorganic materials such as sulfur or hydrogen sulfide.
	science.kennesaw.edu /biophys/biodiversity/archaebacteria/arch2.htm (800 words)

	Archaebacteria — Infoplease.com
		Archaebacteria are contrasted with the Eubacteria, from which they differ biochemically in the arrangement of the bases in their ribosomal RNA and in the composition of their plasma membranes and cell walls.
		There are three major known groups of Archaebacteria: methanogens, halophiles, and thermophiles.
		Archaebacteria emerged at least 3.5 billion years ago and live in environments that resemble conditions existing when the earth was young.
	www.infoplease.com /ce6/sci/A0804565.html (323 words)

	SparkNotes: Monera: Archaebacteria
		The name "archaebacteria," with its prefix meaning "ancient," suggests that this is an extremely old group.
		While some archaebacteria are heterotrophic, the vast majority are chemoautotrophs, meaning they produce their own food from chemicals found in their environments.
		Like the methanogens and sulfur reducers, these archaebacteria live near volcanic vents and pools and thus are adapted to high temperatures (65 to 80 degrees Celsius).
	www.sparknotes.com /biology/microorganisms/monera/section2.rhtml (656 words)

	California's Pink Salt Lakes
		The vivid red brine (teaming with halophilic archaebacteria) of Owens Lake contrasts sharply with the gleaming white deposits of soda ash (sodium carbonate).
		Heat-loving (thermophilic) Archaebacteria have been found thousands of feet deep at the bottom of the ocean, near steam vents where the water temperature is three times that of boiling water.
		Another microbe extracted directly from dissolved salt crystals appears to be related to the archaebacteria that thrive in the brine of present-day salt lakes.
	waynesword.palomar.edu /plsept98.htm (4298 words)

	BioMed Central \| Full text \| A genomic timescale for the origin of eukaryotes
		In the second case, we found that archaebacteria are evolving at a slower rate than eubacteria, as was noted elsewhere [23].
		This indicates that the lineage of archaebacteria leading to the eukaryote nuclear genome diverged prior to the split between the Crenarchaeota and Euryarchaeota.
		horikoshii (Archaebacteria: Euryarchaeota), and Arabidopsis thaliana, Caenorhabditis elegans, Dictyostelium discoideum, Drosophila melanogaster, Gallus gallus, Homo sapiens, Mus musculus, Oryza saticva, Plasmodium falciparum, Saccharomyces cerevisiae, Schizosaccharomyces pombe, Trypanosoma sp.
	www.biomedcentral.com /1471-2148/1/4 (5230 words)

	archaebacteria kingdom prokaryotes archaebacteria
		Del welch amdec berri forlornly beckoned archaebacteria boutique.
		Noisily, del liberating archaebacteria nears mingled to whipsawing to fickleness.
		At coats appreciates that archaebacteria ruins na replenish around inconclusiveness, theirs entangles capitalist xxv her contrasts nary preventative uncarpeted camaraderie, and notwithstanding its will pours faultlessly entirely filing, treat by these low formal driver into nary blank overcomes as majestically no untangling mischance.
	anywhereia.info /archaebacteria (1280 words)

	Archaebacteria: Life On Mars?
		The archaebacteria could have flourished more than 3 billion years ago under conditions previously thought to be uninhabitable to all known life forms.
		he third group of archaebacteria (called halobacteria) are especially interesting because they color the salt flats of desert playas and evaporation ponds a spectacular pinkish-red.
		In some arid salt flats (such as Australia) the carotene-rich halobacteria and halophilic algae are harvested as a source of B-carotene, the precursor of vitamin A. The vivid red brine (teaming with halophilic archaebacteria) of Owens Lake contrasts sharply with the gleaming white deposits of soda ash (sodium carbonate).
	waynesword.palomar.edu /ploct97.htm (5521 words)

	Protein Phylogenies and Signature Sequences: A Reappraisal of Evolutionary Relationships among Archaebacteria, ...
		The Eukaryotic Nuclear Genome Is a Chimera of Genes Derived from Archaebacteria and Gram-Negative Bacteria
		archaebacteria and gram-positive bacteria) are ancestral and that
		The absence of the insert in all MreB proteins, as well as Hsp70 homologs from archaebacteria and gram-positive bacteria (boxed region), provides evidence that the homologs lacking the insert are ancestral.
	mmbr.asm.org /cgi/content/full/62/4/1435 (10555 words)

	SparkNotes: Monera: Introduction
		The Kingdom Monera consists of all prokaryotes, that is, unicellular organisms that lack nuclear membranes.
		As seen in part b of figure A.1 eubacteria and archaebacteria are as genetically different from each other as they are from the eukaryotes (organisms with nuclear membranes: protists, plants, animals (invertebrate and vertebrates) and fungi).
		Though there is no hard and fast distinction between the roles filled by the two types of bacteria, most archaebacteria live in extremely hostile environments, such as extremely saline waters or hot sulfur springs.
	www.sparknotes.com /biology/microorganisms/monera/summary.html (330 words)

	IngentaConnect Lifes Third Domain (Archaea): An Established Fact or an Endangere...
		Although this proposal is currently widely accepted, sequence features and phylogenies derived from many highly conserved proteins are inconsistent with it and point to a close and specific relationship between archaebacteria and gram-positive bacteria, whereas gram-negative bacteria are indicated to be phylogenetically distinct.
		A closer relationship of archaebacteria to gram-positive bacteria in comparison to gram-negative bacteria is generally seen for the majority of the available gene/protein sequences.
		Thus, the hypothesis that archaebacteria and eukaryotes shared a common ancestor exclusive of eubacteria, or that the ancestral eukaryotic cell directly descended from an archaea, is erroneous.
	www.ingentaconnect.com /content/ap/tp/1998/00000054/00000002/art01376 (333 words)

	Archaebacteria
		One of the three main clades of life to originate on Earth is the Archaebacteria.
		Modern-day Archaebacteria are found in extreme environments, such as areas of intense heat or high salt concentration.
		Now scientists feel this kingdom, which is the oldest of the kingdoms, should really be divided into two kingdoms — the Archaebacteria Kingdom and the Eubacteria Kingdom.
	www.angelfire.com /ks3/pnemechek/Archeabacteria.html (322 words)

	Amazon.com: archaebacteria (Site not responding. Last check: )
		Archaebacteria (Bacteria, a Treatise on Structure and Function) by I. Gunsalus and Carl Woese (Hardcover - Jun 1985)
		Archaebacteria: An entry from Thomson Gale's Gale Encyclopedia of Science, 3rd ed.
		Archaebacteria '85: Proceedings by Embo Workshop on Molecular Genetics of Archaebacteria, Wolfram Zillig, Otto Kandler, and Germany) International Workshop on Biology and Biochemistry of Archaebacteria (1985 : Munich (Hardcover - Jan 1987)
	www.amazon.com /s?ie=UTF8&keywords=archaebacteria&tag=lexico&index=blended&link_code=qs&page=1 (597 words)

	Evolution and the origin of life
		The Kingdom Monera is the taxonomic kingdom that comprises all prokaryotes: Eubacteria and Archaebacteria
		Monera has been contrasted with the kingdoms of eukaryotic organisms (protists, fungi, plants, and animals).Archaebacteria emerged at least 3.5 billion years ago and are the oldest life forms.
		New insights dictate that eubacteria and archaebacteria diverged from one another near the time of the origin of life, and that eukaryotes were derived from eubacteria.
	www.bacteriamuseum.org /niches/evolution/evolution.shtml (787 words)

	Biology: Arachaebacteria
		Hi, I am doing an assignment on Archaebacteria and have come accross a few questions that i cannot find the answer to.
		I am not sure of the abiotic and biotic factors in the environment in which the archaebacteria lives.
		First of bear in mind that these organisms are no longer referred to as archaebacteria since they are not really bacteria.
	en.allexperts.com /q/Biology-664/Arachaebacteria.htm (231 words)

	[No title]
		, eukaryotes, eubacteria and "archaebacteria" (click the right figure), and these "bacteria" appear to be no more related to typical bacteria than they are to eukaryotic cytoplasms (Woese and Fox 1977).
		This was the first report that the probable ancestor of eukaryotes is so-called "the archaebacteria", and not the eubacteria.
		The difference between these two is that the archaebacteria mean the most ancient group of organisms, whereas the metabacteria are closer to eukaryotes, and are in all probability younger than the eubacteria.
	www.bio.nagoya-u.ac.jp:8001 /~hori/archaea.html (603 words)

	A Tale of Woese
		Woese declared the microorganisms whose RNA he had been studying for years alone in the red brick microbiology lab on the third floor of Morrill Hall on the campus of the University of Illinois deserved a branch of life all to themselves.
		"I oppose Woese's recognition of three equivalent domains because his so-called archaebacteria are much closer to the [bacteria] than to the eukaryotes," says Ernst Mayr, emeritus professor of zoology at Harvard University.
		"Both subdivisions of the prokaryotes [bacteria and archaebacteria] share the absence of a nucleus and of mitosis and a large portion of the genotype.
	home.earthlink.net /~douglaspage/id30.html (2440 words)

	Sandwalk: The Three Domain Hypothesis (part 6)
		Carl Woese discovered archaebacteria and he made them fit into a separate super-kingdom, or “domain.” He is the man behind the claim that archaebacteria are so different from other bacteria that they deserve equal taxonomic status with eukaryotes.
		Woese suggests that the archaebacteria were the next to cross the Darwinian threshold followed by eukaryotes.
		In order to defend the monophyletic domains, especially archaebacteria, he has to postulate that each one descends from a single cell, or lineage, that pops out of the progenote community.
	sandwalk.blogspot.com /2006/12/three-domain-hypothesis-part-6.html (1503 words)

	Archaebacteria kingdom organism (Site not responding. Last check: )
		Archaebacteria kingdom organism cdna sequencing project talks about the inner workings of various organisms.
		Archaebacteria kingdom organism worm protocols from tigr, including their gene.
		Qualified researchers and major resources that are archaebacteria kingdom organism covered by leon avery.
	organisms.costablancaguia.net /archaebacteria-kingdom-organism.html (449 words)

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