The Nitrogen Cycle
- Created by: Becca1805
- Created on: 27-05-15 14:22
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- Nitrogen fixation by free living bacteria
- Ammonium ions used by plants to make amino acids
- Oxidation
- Oxidation
- Free living, nitrifying bacteria oxidise ammonium ions to form nitrite & nitrate ions in oxygen rich environments as a source of energy
- Free-living denitrifying bacteria use nitrate ions as a source of oxygen in anaerobic conditions
- Nitrate ions absorbed by plants to make amino acids and nucleotides
- Nitrogen fixation by bacteria in root nodules of leguminous plants
- Decomposers break down nitrogen containing compounds in dead organic matter, faeces and urea into ammonium ions
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