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Archaea

Babylon English English dictionary

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archaea
n. group of microorganisms called bacteria that are different in molecular structure, archaebacterium

Wikipedia English The Free Encyclopedia

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Archaea
The Archaea ( or or ; singular archaeon) constitute a domain or kingdom of single-celled microorganisms. These microbes are prokaryotes, meaning that they have no cell nucleus or any other membrane-bound organelles in their cells.

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Dictionary of Medicine

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Archaea
A unique group of microorganisms. They are called bacteria (Archaeobacteria) but they are genetically and metabolically different from all other known bacteria. They appear to be living fossils, the survivors of an ancient group of organisms that bridged the gap in evolution between bacteria and the eukaryotes (multicellular organisms). The name Archaea comes from the Greek archaios meaning ancient.

Common Terms in Evolutionary Biology and Genetics Dictionary

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Archaea
A prokaryote kingdom that has not diverged much from the ancestral prokaryote stock. Contemporary species of Archeabacteria live in extreme conditions. The three major groups are halobacteria, sulphobacteria and methanogens. All other prokaryotes are grouped in Eubacteria.
Archaea

BioProcess International™ Glossary

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archaea
prokaryotic organisms evolutionarily distinct from bacteria; their gene expression pattern (transcription and translation) is more like the eukaryotic pattern.

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