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单词 prokaryon
释义

prokaryonn.

Brit. /prəʊˈkarɪən/, U.S. /proʊˈkɛriən/
Origin: Formed within English, by derivation. Etymons: pro- prefix2, -karyon comb. form.
Etymology: < pro- prefix2 + -karyon comb. form. Compare prokaryotic adj. and later prokaryote n. Compare also eukaryon n.
Biology.
1. The region of a prokaryotic cell where the genetic material is located. Cf. nucleoid n. 2. rare.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > genetic components > [noun] > other genetic structures
messenger1905
transforming principle1944
muton1957
prokaryon1957
recon1957
vector1958
operon1960
R1961
codon1962
replicon1963
regulon1964
promoter1965
promotor1966
transconjugant1974
cassette1977
1957 E. C. Dougherty in Jrnl. Protozool. 4 Suppl. 14/1 For the moneran nucleus I propose prokaryon.., and for that of higher organisms, eukaryon... From these derive..the nouns prokaryosis and eukaryosis and their corresponding adjectives, prokaryotic and eukaryotic.., denoting, respectively, ‘the condition of possessing prokarya or eukarya’.
1969 W. V. Brown & E. M. Bertke Textbk. Cytol. vi. 96/1 The more or less central region of indeterminate shape and no bounding membrane is sometimes called the nucleus but more properly the prokaryon.
2. = prokaryote n. (rare). Also (in plural, in form Prokarya): a taxonomic group comprising the prokaryotes, coextensive with Prokaryota.
ΘΚΠ
the world > life > biology > organism > micro-organism > other micro-organisms > [noun]
aerobian1865
anaerobian1865
microzyme1870
mycetes1874
pathogen1880
zooxanthella1882
aerobe1883
anaerobe1883
zymad1885
pathogerm1897
phytoflagellate1902
filter-passer1906
aerophile1907
zymocytea1909
fermenter1918
phytopathogen1918
phytomonad1926
pleuropneumonia-like organism1935
phototroph1941
mycoplasma1955
prokaryote1963
mycoplasm1964
serovar1973
spiroplasma1973
prokaryon1975
ureaplasma1975
1975 Origins of Life 6 239 (title) Some physical parameters controlling cell size during the evolution of the procaryons.
1994 Jrnl. Inorganic Chem. 56 39 The evaluation of [2Fe–2S] centers in Prokarya/Eukarya.
1996 L. Margulis in Proc. National Acad. Sci. U.S.A. 93 1071/1 A symbiosis-based phylogeny leads to a consistent, useful classification system for all life. ‘Kingdoms’ and ‘Domains’ are replaced by biological names for the most inclusive taxa: Prokarya..and Eukarya.
1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) i. 7 We group our five kingdoms into two superkingdoms: (1) Prokarya, containing the sole prokaryote kingdom, Bacteria, and (2) Eukarya, containing the other four kingdoms.
2002 Biochem. & Biophysical Res. Communications 299 229 These findings provide evidence for the occurrence of DNA-binding motif in prokarya similar to that in eukarya.
2005 Res. Microbiol. 156 932 Microorganisms were isolated from lignite freshly excavated in the Zahorie coal mine... The isolates represented both Prokarya and Eukarya (fungi).
This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022).
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n.1957
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