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also pro·car·y·ote  (prō-kăr′ē-ōt′)
Any of various microorganisms of the domains Archaea and Bacteria, characterized by the absence of a distinct membrane-bound nucleus and membrane-bound organelles and by the simultaneous occurrence of DNA transcription and protein synthesis at the same site, in contrast to eukaryotes. Also called moneran.

[French procaryote : Greek pro-, before; see pro-2 + Greek karuōtos, having nuts (from karuon, nut; see karyo-).]

pro·kar′y·ot′ic (-ŏt′ĭk) adj.


(prəʊˈkærɪɒt) ,




(Biology) any organism having cells in each of which the genetic material is in a single DNA chain, not enclosed in a nucleus. Bacteria and archaeans are prokaryotes. Compare eukaryote
[from pro-2 + karyo- + -ote as in zygote]
prokaryotic, procaryotic adj


or pro•car•y•ote

(proʊˈkær iˌoʊt, -i ət)

any one-celled organism that lacks a distinct membrane-bound nucleus and has its genetic material in the form of a continuous strand forming loops or coils: characteristic of monerans. Compare eukaryote.
[taken as singular of New Latin Prokaryota, earlier Procaryotes (1925); see pro-2, eukaryote]
pro•kar`y•ot′ic (-ˈɒt ɪk) adj.


Any of a wide variety of one-celled organisms that lack a distinct cell nucleus or other structures bound by a membrane and that have DNA that is not organized into chromosomes. Prokaryotes reproduce asexually, are the most primitive and ancient known forms of life, and include the bacteria and blue-green algae. Prokaryotes are grouped as a separate kingdom in taxonomy. Also called moneran. Compare eukaryote. See Table at taxonomy.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.prokaryote - a unicellular organism having cells lacking membrane-bound nuclei; bacteria are the prime example but also included are blue-green algae and actinomycetes and mycoplasma
organism, being - a living thing that has (or can develop) the ability to act or function independently
eucaryote, eukaryote - an organism with cells characteristic of all life forms except primitive microorganisms such as bacteria; i.e. an organism with `good' or membrane-bound nuclei in its cells
References in periodicals archive ?
So, it is assumed that FtsZ mediates prokaryotic cell division, and mitochondrial and plastid division in eukaryotes, by developing an energetic ring among potential daughter cells (or daughter organelles) (Koumandou, Wickstead, Ginger, van der Glezen, Dacks and Field, 2013).
hydrophila is a Gramnegative prokaryotic cell with straight rod with rounded ends.
The Transcriptional Network Structure of a Prokaryotic Cell: A Comparison.
coli which is a prokaryotic cell. In essence, the codon usage pattern in E.
David Baum explains the differences between the outside-in and inside-out theories using a metaphor: "A prokaryotic cell can be thought of as a factory composed of one large, open building in which managers, machinists, mail clerks, janitors, etc.
The prokaryotic Cell: Bacteria, Available at 9.5.2006.
It is a process that has been continuing since the inception of life in the first prokaryotic cell. While present-day humans are of necessity the last stage known to us in the line of evolution, involving progression from simple to increasingly complex forms, there is no reason why evolution should not continue into the indefinite future, just as it has progressed and continued up to the present.
Because bacterial cells have a different structure and function from the cells of mammals, antimicrobial drugs have been developed that can damage or kill the prokaryotic cell with minimal harm to the human host.
Prokaryotic cell reproduction is quite simple compared to eukaryotic cell reproduction.
Both eukaryotic and prokaryotic cell culture models have been developed to elucidate molecular mechanisms by which physical and chemical environmental exposures activate or deregulate molecular pathways leading to disease outcomes.