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The Nitrogen Cycle

The Nitrogen Cycle. Anna Applebaum Lindsey Doyle Amy Clark Kathryn Christensen. Nitrogen Fixation. Process that nitrogen gas is converted to ammonia Necessary for biomass growth 1 u N 2 = 2 u NH 4. Bacteria…mhmm, yum! It’s in your cheese!. Nitrification.

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The Nitrogen Cycle

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  1. The Nitrogen Cycle Anna Applebaum Lindsey Doyle Amy Clark Kathryn Christensen

  2. Nitrogen Fixation • Process that nitrogen gas is converted to ammonia • Necessary for biomass growth • 1 u N2 = 2 u NH4 Bacteria…mhmm, yum! It’s in your cheese!

  3. Nitrification • It is the oxidation of ammonia to nitrate • Bacteria- (Nitrosomonas and Nitrobacters) only living organism that can convert ammonia to nitrate • The rate limiting step of Nitrogen Cycle

  4. Denitrification • Anaerobic process • Nitrate-nitrogen into nitrogen gas • Reduces oxidized forms of nitrogen • Opposite process of nitrogen fixation • Preformed by heterotrophic bacteria

  5. Meanwhile… • Assimilation: inorganic nitrogen to organic nitrogen (i.e. amino acids) • Enzymes • Ammonification: reverse of assimilation • Decomposers, worms

  6. Works Cited • http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/N/NitrogenCycle.html September 21 • http://www.biology.ed.ac.uk/research/groups/jdeacon/microbes/nitrogen.htm • http://chemistry.about.com/od/periodictableelements/ig/Elements-in-the-Human-Body/Nitrogen.--WG.htm (liquid nitrogen) • http://www.hsc.csu.edu.au/agriculture/production/3363/nitrogen.htm • http://www.abdn.ac.uk/~mbi010/nitrification.htm • http://www.rpi.edu/dept/chem-eng/Biotech-Environ/Environmental/nitrification.html • http://www.tampagov.net/dept_Wastewater/information_resources/Advanced_Wastewater_Treatment_Plant/Virtual_Tour/step_4_-_denitrification.asp • http://www.lenntech.com/nitrogen-cycle.htm • http://www.atmosphere.mpg.de/enid/Nr_8_April_2__6_Ozone___N2_cycle/C__The_nitrogen_cycle_5lp.html • http://www.p2pays.org/ref/02/01244/www.epa.gov/agriculture/images/fig1.gif • http://swroc.cfans.umn.edu/soilandwater/soilmgmt/ammonification.gif

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