The unusual type of organisms are phototrophic which is able to use light as an energy source others are chemolithotrophicare able to obtain energy by oxidizing inorganic compounds such as ammonia, nitrate, hydrogen sulfide or ferrous iron. Still others are not distinguished by an unusual metabolism but rather by other features such as the occurrence of gliding motility rather than motility by the action of flagella reproduction by budding rather than by binary fission or special morphological structures such as sheaths, prosthecae and stalks. Anoxygenic phototrophic bacteria have the major characteristic of gram negative bacteria that contain bacteriochlorophyll and can use light as an energy source.
Sunday, 7 March 2010
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