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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.[१] 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".[२]
[संपादित करें] References
- ↑ Kaiser D (October 2003). "Coupling cell movement to multicellular development in myxobacteria". Nat. Rev. Microbiol. 1 (1): 45–54. DOI:10.1038/nrmicro733. PMID 15040179.
- ↑ Campbell, N. "Biology:Concepts & Connections". Pearson Education. San Francisco: 2003.
[संपादित करें] 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
[संपादित करें] External links
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