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  • Archaebacteria - Encyclopedia. com
    Archaebacteria, like all prokaryotes, have no membrane bound organelles This means that the archaebacteria are without nuclei, mitochondria, endoplasmic reticula, lysosomes, Golgi complexes, or chloroplasts The cells contain a thick cytoplasm that contains all of the molecules and compounds of metabolism and nutrition Archaebacteria have a
  • Bacterial Kingdoms - Encyclopedia. com
    There are two kingdoms of prokaryotes These are the bacteria (or eubacteria) and the archaebacteria (or the Archaea) The members of these two kingdoms appear similar in shape and appearance, even under the extreme magnification of the electron microscope However, they are very different from each other in a number of molecular and
  • Prokaryota - Encyclopedia. com
    Prokaryota The prokaryota are one of the two major groups of biological organisms The other is the eukaryota Prokaryotes consist of two kingdoms: the archaebacteria and the eubacteria Prokaryotes contribute the greatest biomass (amount of living matter) of any biological group and inhabit virtually all known earthly environments
  • Kingdom - Encyclopedia. com
    Molecular evidence, particularly from ribosomal ribonucleic acid (RNA), suggests that the five-kingdom scheme is also too simple Some biologists believe that Protista should be partitioned into three or more kingdoms Similarly, kingdom Monera contains two very biochemically distinct groups of prokaryotes: archaebacteria, and eubacteria
  • Evolutionary Origin of Bacteria and Viruses | Encyclopedia. com
    Such "extremophiles" are part of the division of life known as the Archae, specifically the archaebacteria Whether bacteria originated in the sea or on land remains a mystery The available evidence, however, supports the origin of bacteria in the sea
  • Eubacteria - Encyclopedia. com
    Some scientists regard the Eubacteria group as an artificial assemblage, merely a group of convenience rather than a natural grouping Other scientists regard eubacteria as comprising their own kingdom Another recent classification holds Eubacteria and Archaebacteria as domains or major groupings, classified above the kingdom level
  • Bacteria - Encyclopedia. com
    Examples of archaebacteria are those bacteria which currently live in extremely salty environments or extremely hot environments, like geothermal vents of the ocean floor Characteristics of bacteria Although all bacteria share certain structural, genetic, and metabolic characteristics, important biochemical differences exist among the many
  • Eukaryote - Encyclopedia. com
    eukaryote (yōōkâr´ē-ōt´), a cell or organism composed of cells that have a membrane-bound nucleus and organelles (mitochondria, chloroplasts; see cell [1], in biology) and genetic material organized in chromosomes in which the DNA is combined with histone [2] proteins
  • The Institute for Genomic Research (TIGR) | Encyclopedia. com
    TIGR scientists sequenced the genomes of a number of viruses, bacteria, archaebacteria, plants, animals, fungi, and protozoa The sequences of the bacteria Haemophilus influenzae and Mycoplasma genitalium, published in 1996, were the first complete bacterial DNA sequences ever accomplished





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