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Transform nitrogen from one form to another
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- The processes in the nitrogen cycle is to transform nitrogen from one form to another. Many of those processes are carried out by microbes, either in their effort to harvest energy or to accumulate nitrogen in a form needed for their growth.
en.wikipedia.org/wiki/Nitrogen_cycle
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What is the Nitrogen Cycle? Nitrogen Cycle is a biogeochemical process through which nitrogen is converted into many forms, consecutively passing from the atmosphere to the soil to organism and back into the atmosphere. It involves several processes such as nitrogen fixation, nitrification, denitrification, decay and putrefaction.
- 13 min
- Nitrogen Fixation. The first stage in the nitrogen cycle is the reduction of N2 gas to ammonia, a process called nitrogen fixation. The process of converting atmospheric N2 gas into ammonia is carried out by only a few microorganisms, termed diazotrophs which have an enzyme called “nitrogenase” that combines nitrogen atoms with hydrogen atoms.
- Nitrification. Nitrification is a two-step process in which NH3/ NH4is converted to NO3. First, the soil bacteria Nitrosomonas and Nitrococcus convert NH3 to NO2, and then another soil bacterium, Nitrobacter, oxidizes NO2 to NO3.
- Nitrogen Assimilation. The next step in the nitrogen cycle is the assimilation of inorganic nitrogen, into organic nitrogen-containing compounds. It is the process by which plants and animals incorporate the NO3 and ammonia formed through nitrogen fixation and nitrification.
- Ammonification. Assimilation produces large quantities of organic nitrogen, including proteins, amino acids, and nucleic acids. Ammonification is the conversion of organic nitrogen into ammonia.
The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmospheric, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes.
Feb 5, 2018 · Microbial nitrogen-transforming networks both attenuate and exacerbate human-induced global change. They produce and consume the powerful greenhouse gas nitrous oxide, lead to...
- Marcel M. M. Kuypers, Hannah K. Marchant, Boran Kartal
- 2018
Sep 25, 2019 · The biological nitrogen cycle mainly consists of internal interactions within the reactive nitrogen pool and in- and out-flow between reactive nitrogens and atmospheric N 2 pools.
- Ken Takai
- 10.1264/jsme2.ME3403rh
- 2019
- Microbes Environ. 2019 Sep; 34(3): 223-225.
Mar 8, 2023 · The microbial participation in the nitrogen cycle is of great importance for the environment. In microbial conversions, all oxidation stages are passed through. The nitrogen fixation, ammonification, nitrification, anaerobic ammonium oxidation, and nitrate reduction...
This article explores how nitrogen becomes available to organisms and what changes in nitrogen levels as a result of human activity means to local and global ecosystems.
