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Bacteria print that page


There are approximately ten times as many bacterial cells in the human flora as there are human cells in the body, with large numbers of bacteria on the skin and as gut flora . [ 6 ] The vast majority of the bacteria in the body are rendered harmless by the protective effects of the immune

Magnetotactic bacteria print that page


The first description of magnetotactic bacteria appeared in 1963 in a publication of the Microbiology Institute ( Italian : Instituto di Microbiologia ) of the University of Pavia written by Salvatore Bellini. [ 3 ] While observing bog sediments under his microscope, he noticed a group of

L-form bacteria print that page


the original morphology and stable L-forms , L-forms which are unable to revert to the original bacteria . Some parasitic species of bacteria , such as mycoplasma , also lack a cell wall [ 3 ] , but these are not considered as L-forms since they are not derived from bacteria that normally

Pathogenic bacteria print that page

Pathogenic bacteria are bacteria that cause bacterial infection . This article deals with human pathogenic bacteria . Although the vast majority of bacteria are harmless or beneficial, quite a few bacteria are pathogenic . One of the bacterial diseases with highest disease burden is

wikipedia.org | 2011/8/18 20:14:58

Cancer bacteria print that page

A number of bacteria have associations with cancer, although their possible role in carcinogenesis is unclear. Bacteria Suggested link Salmonella typhi is associated with gallbladder cancer . [ 5 ] [ 6 ] Streptococcus bovis is associated with colorectal cancer . [ 5 ] [ 7 ]

wikipedia.org | 2011/4/6 20:50:55

Denitrifying bacteria print that page

water, as part of the nitrogen cycle. Some nitrogen may also be fixated by species of nitrifying bacteria and the cyanobacteria . Denitrification also becomes the key pathway for dissimilation , which is the process in which nitrates are reduced from the soil, the former being highly toxic

wikipedia.org | 2011/8/9 18:55:10

Coliform bacteria print that page


[ edit ] See also Bacteriological water analysis Coliform index Fecal coliform Indicator bacteria [ edit ] References ^ American Public Health Association (APHA), Standard Methods for the Examination of Water and Wastewater (19th ed.), APHA, Washington, DC (1995). ^ The Microbiology

Luminescent bacteria print that page

Some species of luminescent bacteria possess quorum sensing, the ability to determine local population by the concentration of chemical messengers. Species which have quorum sensing can turn on and off certain chemical pathways, commonly luminescence; in this way, once population levels reach

wikipedia.org | 2010/9/25 1:16:11

Iron bacteria print that page


In the management of water-supply wells , iron bacteria are bacteria that derive the energy they need to live and multiply by oxidizing dissolved ferrous iron (or the less frequently available manganese ). The resulting ferric oxide is insoluble, and appears as brown gelatinous slime

Gram-positive bacteria print that page


some species) if present, it contains two rings for support as opposed to four in Gram-negative bacteria because Gram-positive bacteria have only one membrane layer. The individual peptidoglycan molecules are cross-linked by pentaglycine chains by a DD-transpeptidase enzyme. In gram