BioConcepts

prokaryotesProkaryota (lat.); procaryotes (fr.); Prokaryoten (ger.)

• The superkingdom containing all that lack a membrane-bound nucleus containing chromosomes. Cell division involves binary fission. Centrioles, mitotic spindles, and mitochondria are absent. Aside from pillotinas, prokaryotes also lack microtubules. The first cells, which are thought to have evolved about 3.9 billion years ago, were chemoautotrophic prokaryotes. Prokaryotes still make up the majority of the earth's biomass. Their total population (4–6 × 10^30 cells) constitutes the largest living reservoir of the elements C, N, and P. The superkingdom Prokaryotes contains one kingdom, the Monera. (Oxford Dict. of Genetics 2007)
  category bacterium see also eukaryotes

  1925

  Procaryotes

  Chatton, É. (1925). Pansporella perplexa, amoebien à spores, protégées parasite des daphnies. Réflexions sur la biologie et la phylogénie des protozoaires. Ann. Sci. Nat. Zool. (sér. 10) 8, 5-84: 76-7.

  1932

  Protistes Procaryotes, dépourvus de noyau défini et de mitochondries individualisées: Bactéries et forms affines

  Lwoff, A. (1932). Recherches biochimiques sur la nutrition des protozoaires: 3; id. (1938). Remarques sur la physiologie comparée des protistes eucaryotes. Les leucophytes et l’oxytrophie. Arch. Protistenk. 90, 194-209: 194.