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单词 monera
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Monera

enUK

Mo•ne•ra

(məˈnɪər ə)

n. (used with a pl. v.) a taxonomic kingdom of prokaryotic organisms that typically reproduce by asexual budding or fission, comprising the bacteria, blue-green algae, and various primitive pathogens. [< New Latin (1869), pl. of monēron, < Greek monḗrēs solitary, single, derivative of mónos alone, only]
Thesaurus
Noun1.Monera - prokaryotic bacteria and blue-green algae and various primitive pathogensMonera - prokaryotic bacteria and blue-green algae and various primitive pathogens; because of lack of consensus on how to divide the organisms into phyla informal names are used for the major divisionskingdom Monera, kingdom Prokaryotae, Prokayotaemoneran, moneron - organisms that typically reproduce by asexual budding or fission and whose nutritional mode is absorption or photosynthesis or chemosynthesisdivision Archaebacteria - in some classifications considered a kingdomdivision Eubacteria - one-celled monerans having simple cells with rigid walls and (in motile types) flagellafamily Lactobacillaceae, family Lactobacteriaceae, Lactobacillaceae, Lactobacteriaceae - lactic acid bacteria and important pathogens; bacteria that ferment carbohydrates chiefly into lactic acidphylum Pyrrophyta, Pyrrophyta - a division of lower plants comprising unicellular and biflagellate algae that form starchy compoundskingdom - the highest taxonomic group into which organisms are grouped; one of five biological categories: Monera or Protoctista or Plantae or Fungi or Animalia

Monera

enUK

Monera,

taxonomic kingdom that comprises the prokaryotes (bacteriabacteria
[pl. of bacterium], microscopic unicellular prokaryotic organisms characterized by the lack of a membrane-bound nucleus and membrane-bound organelles. Once considered a part of the plant kingdom, bacteria were eventually placed in a separate kingdom, Monera.
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 and cyanobacteriacyanobacteria
or blue-green algae,
photosynthetic bacteria that contain chlorophyll. For many years they were classified in the plant kingdom along with algae, but discoveries made possible by the electron microscope and new biochemical techniques have shown them to be
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). Prokaryotes are single-celled organisms that lack a membrane-bound nucleus and usually lack membrane-bound organelles (mitochondria, chloroplasts; see cellcell,
in biology, the unit of structure and function of which all plants and animals are composed. The cell is the smallest unit in the living organism that is capable of integrating the essential life processes. There are many unicellular organisms, e.g.
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, in biology). They have a small ring of DNA as their genetic material and reproduce asexually. A recently proposed system classifies these organisms in two major groupings called Eubacteria and ArchaebacteriaArchaebacteria
, 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
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, or archaea. Monera has been contrasted with the kingdoms of eukaryotic organisms (protists, fungi, plants, and animals; see eukaryoteeukaryote
, a cell or organism composed of cells that have a membrane-bound nucleus and organelles (mitochondria, chloroplasts; see cell, in biology) and genetic material organized in chromosomes in which the DNA is combined with histone proteins.
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).

Monera

[mə′nir·ə] (biology) A kingdom that includes the bacteria and blue-green algae in some classification schemes.

Monera

enUK

Monera

 [mo-ne´rah] in the classification of living organisms, a kingdom comprising all unicellular organisms that lack true nuclei (the prokaryote), including principally the bacteria. Formerly called Procaryotae.

Mo·ne·ra

(mō-nē'ră), The prokaryotes, a kingdom of primitive microbial organisms characterized by having no defined nucleus or chromosomes; DNA that is not membrane bound; and absence of centrioles, mitotic spindle, microtubules, and mitochondria; division of the ill-defined nuclear zone (nucleoid) is by separation of two masses attached to parts of the cell membrane, then growing apart (a form of amitosis). Monera includes the blue-green algae and bacteria; viruses, which lack a true cell, may have originated as "escaped nucleic acids" or "wild genes" from eukaryotic cells and are not included. [pl. of Mod. L. moneron, fr. G. monērēs, solitary]

Monera

the kingdom that, in older classifications, contains all prokaryotes.

Monera

enUK
Related to Monera: Protista, bacteria
  • noun

Synonyms for Monera

noun prokaryotic bacteria and blue-green algae and various primitive pathogens

Synonyms

  • kingdom Monera
  • kingdom Prokaryotae
  • Prokayotae

Related Words

  • moneran
  • moneron
  • division Archaebacteria
  • division Eubacteria
  • family Lactobacillaceae
  • family Lactobacteriaceae
  • Lactobacillaceae
  • Lactobacteriaceae
  • phylum Pyrrophyta
  • Pyrrophyta
  • kingdom
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更新时间:2024/9/22 15:29:02