Noun

(bacteria)

(microbiology) A single celled organism with no nucleus.

*{{quote-magazine, date=2013-07-20, volume=408, issue=8845, magazine=(The Economist)

, title= Welcome to the plastisphere , passage=Plastics are energy-rich substances, which is why many of them burn so readily. Any organism that could unlock and use that energy would do well in the Anthropocene. Terrestrial bacteria and fungi which can manage this trick are already familiar to experts in the field.}}

Noun

(en noun)

Any bacterium of the phylum Firmicutes.

* 2007 , M. Madan Babu, S. Balaji, L. Aravind, General Trends in the Evolution of Prokaryotic Transcriptional Regulatory Networks'', Jean-Nicolas Volff (editor) ''Gene and Protein Evolution , page 72,

In contrast, all the interactions in this motif are conserved in several distantly related genomes such as the beta-proteobacterium B. pertussis'' and the firmicute ''D. hafniense (fig. 2b).

* 2008 , J. P. W. Young, Chapter 14: The Phylogeny and Evolution of Nitrogenases'', Rafael Palacios, William Edward Newton (editors), ''Genomes and Genomics of Nitrogen-fixing Organisms , page 227,

Type C ("clostridial") is found in the firmicute bacterium Clostridium'', the green sulfur bacterium ''Chlorobium'', and also in the archaeon ''Methanosarcina .

* 2013 , Dietrich H. Nies, 5: RND Efflux Pumps for Metal Cations'', Edward W. Yu, Qijing Zhang, Melissa H. Brown, Stephanie Baugh (editors), ''Microbial Efflux Pumps: Current Research , page 110,

Exceptions were sequence CRE-06266 from the worm Caenorhabditis remanei'' and ZP_01666833 from the Gram-positive firmicute ''Thermosinus carboxidovorans .