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Date : 1998-10-28
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Nitrogen fixation Wikipedia ~ Nitrogen fixation is a process by which molecular nitrogen in the air is converted into ammonia NH 3 or related nitrogenous compounds in soil Atmospheric nitrogen is molecular dinitrogen a relatively nonreactive molecule that is metabolically useless to all but a few microorganisms
nitrogen fixation Definition Process Examples Types ~ Nitrogen fixation is the process by which atmospheric nitrogen is converted either by a natural or an industrial means to a form of nitrogen such as ammonia In nature most nitrogen is harvested from the atmosphere by microorganisms see above to form ammonia nitrites and nitrates that can be used by plants
Nitrogen Fixation Definition of Nitrogen Fixation by ~ Nitrogen fixation definition is the conversion of atmospheric nitrogen into a combined form such as ammonia through chemical and especially biological action such as that of soil rhizobia
Nitrogen fixation New World Encyclopedia ~ Nitrogen fixation is the process by which nitrogen is taken from its relatively inert molecular form N 2 in the atmosphere and converted into nitrogen compounds useful for other chemical processes such as notably ammonia nitrate and nitrogen dioxide
Nitrogen Fixation ~ Biological nitrogen N 2 fixation is the reduction of atmospheric nitrogen gas to ammonia according to the equation N 2 10H 8 e 16ATP 2NH 4 H 2 16ADP 16P i The reaction is mediated by an oxygensensitive enzyme nitrogenase and requires energy as indicated by the consumption of adenosine triphosphate ATP
Nitrogen Fixation Boundless Microbiology ~ Key Points Nitrogen fixation takes elemental nitrogen N 2 and converts it into a ammonia a format usable by biological organism The fixed form of nitrogen NH 3 is needed as an essential component of DNA and proteins Therefore it is needed for all life on earth Nitrogen fixation is carried
What Is Fixed Nitrogen or Nitrogen Fixation ~ There are two key methods of natural nitrogen fixation Lightning Lightning provides energy to react water H 2 O and nitrogen gas N 2 Bacteria Microorganisms that fix nitrogen are known collectively as diazotrophs
Nitrogen fixation University of Edinburgh ~ Some ammonia also is produced industrially by the HaberBosch process using an ironbased catalyst very high pressures and fairly high temperature But the major conversion of N 2 into ammonia and thence into proteins is achieved by microorganisms in the process called nitrogen fixation or dinitrogen fixation
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