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Bacteria (/bækˈtɪəriə/ ; sg.: bacterium) are ubiquitous,
mostly free-living
organisms often consisting of one
biological cell. They
constitute a large...
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Coliform bacteria are
defined as
either motile or non-motile Gram-negative non-spore
forming bacilli that
possess β-galactosidase to
produce acids and...
- Gram-negative
bacteria are
bacteria that do not
retain the
crystal violet stain used in the Gram
staining method of
bacterial differentiation.
Their defining...
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Pathogenic bacteria are
bacteria that can
cause disease. This
article focuses on the
bacteria that are
pathogenic to humans. Most
species of
bacteria are harmless...
- gram-positive
bacteria are
bacteria that give a
positive result in the Gram
stain test,
which is
traditionally used to
quickly classify bacteria into two broad...
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Nitrifying bacteria are
chemolithotrophic organisms that
include species of
genera such as Nitrosomonas, Nitrosococcus, Nitrobacter, Nitrospina, Nitrospira...
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sulfur bacteria in Wiktionary, the free dictionary.
Sulfur bacteria may
refer to:
Green sulfur bacteria Purple sulfur bacteria Sulfate-reducing
bacteria Sulfur-reducing...
- Putrefying/decay
bacteria are
bacteria involved in
putrefaction of
living matter.
Along with
other decomposers, they play a
critical role in recycling...
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Intracellular bacteria are
bacteria that have the
capability to
enter and
survive within the
cells of the host organism. Many of them are
capable of growth...
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Spiral bacteria,
bacteria of
spiral (helical) shape, form the
third major morphological category of
prokaryotes along with the rod-shaped
bacilli and round...