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Dictionary » Archaea


Introduction: Archaea

Description of Archaea

Archaea: a third kingdom evolutionarily distinct from bacteria and eukaryotes, but closest to eukaryotes according to RNA analysis; tend to live in extreme environments; include sulfur, heat, salt, acid, and pressure loving "bacteria" .
Source: CRISP

Archaea: One of the three domains of life (the others being BACTERIA and Eukarya), formerly called Archaebacteria under the taxon Bacteria, but now considered separate and distinct. They are characterized by: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls; (3) the presence of ether-linked lipids built from branched-chain subunits; and (4) their occurrence in unusual habitats. While archaea resemble bacteria in morphology and genomic organization, they resemble eukarya in their method of genomic replication. The domain contains at least four kingdoms: $CRENARCHAEOTA$; EURYARCHAEOTA; NANOARCHAEOTA; and KORARCHAEOTA.
Source: MeSH 2007

Archaea: Related Topics

These medical condition or symptom topics may be relevant to medical information for Archaea:

Terms associated with Archaea:

Terms Similar to Archaea:

Source - MeSH 2007

More specific terms for Archaea:

Source - MeSH 2007

Broader terms for Archaea

Source - CRISP

The term Archaea can be used for:

Source: CRISP

Other terms that may be related to Archaea:

Source: CRISP

The description of Archaea may also be used for the following terms:

Source: CRISP

Hierarchical classifications of Archaea

The following list attempts to classify Archaea into categories where each line is subset of the next.

MeSH 2007 Hierarchy:

Interesting Medical Articles:

Medical dictionaries:

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