Bacteria
Bacteria (Graece βακτήριον 'parvum baculum') sunt organismi plerumque libere viventes et omnibus locis praesentes, qui saepe in una cellula consistunt ac magnum microorganismorum prokaryoticorum dominium constituunt. Ferme pauca micrometra longa, inter prima vitae genera in tellure orta erant, atque in plurimis eius habitationibus iam inveniuntur. Solum, aquam, fontes calidos acidicos, ramenta radioactiva, et biosphaeram profundam corticis Telluris habitant. Magni momenti sunt bacteria in multis circuli nutrimentorum gradibus per nutrimenta sicut nitrogenium ex atmosphera extracta et ficta. Circulus nutrimentorum decompositionem corporum mortuorum comprehendit, ubi bacteria rationem gradus putrefactionis reddunt. In communitatibus biologicis quae spiramenta hydrothermalia et manationes frigidas circumdant, bacteria extremophilia nutrimenta ad vitam sustenendam necessaria per composita soluta, sicut sulphidum hydrogenii et methanum, ad energiam conversa praebent. Bacteria praeterea symbiotice et parasitice cum plantis animalibusque coniunguntur. Plurima nondum rite circumscripta sunt, multaeque species coli in laboratorio non possunt. Studium bacteriorum est bacteriologia, provincia microbiologiae.

Bacteria ubique sunt, et nonnulla morbos efficiunt. 

Taxinomia bacteriorum multum disputatur. Post systema trium dominiorum a Carolo Woese anno 1977 propositum, bacteria dominium habentur, regni igitur gradus manet non usitatus. Secundum indicem LPSN, dominio sunt triginta phyla, ad dexteram partem huius paginae indicata.

Structura bacteriorum 
Structura bacteriorum cum notionibus morphologiae, structurae intracellulares, membranae plasmaticae, parietis cellularis, endospororum, et structurae extracellulares describitur. Nonnumquam membrana plasmatica (interne, cytoplasmati adversa) et paries cellularis communiter involucrum cellulare nominatur.

Morphologia 
Forma bacterii singularis conspicua est. Ita morphologia nominatur coccus, bacillus, coccobacillus, spiraliter, fílamentose.

Structurae intracellulares 
Structurae intra bacterium sunt per exemplum cytosceletus, membranae internae, ribosomata, ADN, plasmidi.

Cytosceletus 

Cytosceletus cellulae figuram ad locum tenet.

Membranae plasmaticae 
Membrana plasmatica bacteriorum fines cytoplasmatis constituit.

Paries cellularis 
Plerisque bacteriis una paries cellularis est, quae bacteriis rigorem stabilitatemque tribuit.

Endospori 
Tempore sine nutrimento bacteria in endosporos structurae duriorae transeunt. Illi non in proles mutant, sed ex membrana, cortice, nucleo consistunt.

Structurae extracellulares 
Structurae externae bacterii sunt fimbriae, pili, lamina superficialis, glycocalyx, flagellae

Phyla confirmata
Phyla sequentia secundum Bacteriological Code rite circumscripta sunt.

 Acidobacteriota
 Actinomycetota
 Aquificota
 Armatimonadota
 Atribacterota
 Bacillota
 Bacteroidota
 Balneolota
 Bdellovibrionota
 Caldisericota
 Calditrichota
 Campylobacterota
 Chlamydiota
 Chlorobiota
 Chloroflexota
 Chrysiogenota
 Coprothermobacterota
 Deferribacterota
 Deinococcota
 Dictyoglomota
 Elusimicrobiota
 Fibrobacterota
 Fusobacteriota
 Gemmatimonadota
 Ignavibacteriota
 Lentisphaerota
 Mycoplasmatota
 Myxococcota
 Nitrospinota
 Nitrospirota
 Planctomycetota
 Pseudomonadota
 Rhodothermota
 Spirochaetota
 Synergistota
 Thermodesulfobacteriota
 Thermomicrobiota
 Thermotogota
 Verrucomicrobiota

Praeclara bacteria 

 Acinetobacter spp.
 Agrobacterium tumiefaciens
 Bacillus anthracis
 Bacillus cereus
 Bacillus coagulans
 Bacillus megaterium
 Bacillus subtilis
 Escherichium coli
 Helicobacter pylori
 Pseudomonas aeruginosa
 Staphylococcus aureus
 Streptococcus pneumoniae
 Streptococcus mutans
 Streptococcus suis
 Yersinia pestis

 Antibioticum
 Bacteria psychrotrophica
 Bacteria transgenica
 Bifidobacterium
 Biota
 Biotechnologia
 Index ordinum bacteriorum
 International Code of Nomenclature of Bacteria
 Meningitis
 Microorganismus
 Oecologia
 Parasitismus
 Prokaryota
 Rhizobium
 Staphylococcus
 Streptococcus
 Symbiosis

Notae

Bibliographia 
 Alcamo, I. E. 2001. Fundamentals of microbiology. Bostoniae: Jones and Bartlett. ISBN 0-7637-1067-9.
 Atlas, R. M. 1995. Principles of microbiology. Urbe Sancti Ludovici: Mosby. ISBN 0-8016-7790-4.
 Clark, D. 2010. Germs, Genes, & Civilization: how epidemics shaped who we are today. Upper Saddle River Novae Caesareae: FT Press. ISBN 978-0-13-701996-0. OCLC 473120711.
 Crawford, D. 2007. Deadly Companions: how microbes shaped our history. Oxoniae et Novi Eboraci: Oxford University Press. ISBN 978-0-19-956144-5. OCLC 183198723.
 Funke, B. R., G. J. Tortora, et C. L Case. 2004. Microbiology: an introduction. Ed. octava. Franciscopoli: Benjamin Cummings. ISBN 0-8053-7614-3.
 Hall, B. 2008. Strickberger's Evolution: the integration of genes, organisms and populations. Sudburiae Massachusettae: Jones and Bartlett. ISBN 978-0-7637-0066-9. OCLC 85814089.
 Holt, J. C., et D. H. Bergey. 1994. Bergey's manual of determinative bacteriology. Ed. nona. Baltimorae: Williams & Wilkins. ISBN 0-683-00603-7.
 Hugenholtz, P., B. M. Goebel, et N. R. Pace. 1998. "Impact of culture-independent studies on the emerging phylogenetic view of bacterial diversity." Journal of Bacteriology 180 (18): 4765–74. PMID 9733676. PMC 107498. Textus interretialis.
 Krasner, R. 2014. The Microbial Challenge: a public health perspective. Burlingtoniae Massachusettae: Jones & Bartlett Learning. ISBN 978-1-4496-7375-8. OCLC 794228026.
 Martinko, J. M., et M. T. Madigan. 2005. Brock Biology of Microorganisms. Ed. undecima. Englewood Cliffs Novae Caesareae: Prentice Hall. ISBN 0-13-144329-1.
 Pommerville, J. C. 2014. Fundamentals of Microbiology, ed. decima. Bostoniae: Jones and Bartlett. ISBN 978-1-284-03968-9.
 Shively, Jessup M. 2006. Complex Intracellular Structures in Prokaryotes. Microbiology Monographs. Berolini: Springer. ISBN 3-540-32524-7.
 Wheelis, M. 2008. Principles of modern microbiology. Sudburiae Massachusettae: Jones and Bartlett Publishers. ISBN 978-0-7637-1075-0. OCLC 67392796.
 Witzany, G. 2008. "Bio-Communication of Bacteria and their Evolutionary Roots in Natural Genome Editing Competences of Viruses." Open Evolution Journal 2: 44–54. .

Nexus externi 
 De nomenclatura organismorum. 

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Taxa Woese
Taxa 1990