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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...
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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-negative
bacteria are
bacteria that
unlike gram-positive
bacteria do not
retain the
crystal violet stain used in the Gram
staining method of bacterial...
- 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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Spiral bacteria,
bacteria of
spiral (helical) shape, form the
third major morphological category of
prokaryotes along with the rod-shaped
bacilli and round...
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Purple bacteria or
purple photosynthetic bacteria are Gram-negative
proteobacteria that are phototrophic,
capable of
producing their own food via photosynthesis...
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Nitrifying bacteria are
chemolithotrophic organisms that
include species of
genera such as Nitrosomonas, Nitrosococcus, Nitrobacter, Nitrospina, Nitrospira...
- up
bacteria in Wiktionary, the free dictionary.
Bacteria are a
major group of
prokaryotic living organisms.
Bacteria may also
refer to:
Bacteria (malware)...
- In some
forms of
photosynthetic bacteria, a chromatop**** is a pigmented(coloured), membrane-****ociated
vesicle used to
perform photosynthesis. They contain...
