प्रोकैर्योट्स

Cell structure of a bacterium, one of the two groups of prokaryotic life.

The prokaryotes (उच्चारण सहायता /proʊˈkærioʊts/; singular prokaryote /proʊˈkæriət/) are a group of organisms that lack a cell nucleus (= karyon), or any other membrane-bound organelles. They differ from the eukaryotes, which have a cell nucleus. Most are unicellular, but a few prokaryotes such as Myxobacteria have multicellular stages in their life cycles. The word prokaryote comes from the Greek πρό- (pro-) "before" + καρυόν (karyon) "nut or kernel", referring to the cell nucleus, + suffix -ώτης (-ōtēs) (pl. -ώτες (-ōtes)). It is also spelled "procaryote".

See also

• Archaea and Bacteria, the two prokaryotic taxa
• Monera, an obsolete kingdom including both of the above
• Bacterial cell structure
• Nanobe
• Virus
• Prion
• Symbiogenesis

External links

• Prokaryote versus eukaryote, BioMineWiki

 This article incorporates public domain material from the NCBI document "Science Primer".