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12 Cards in this Set
- Front
- Back
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Nitrogen Fixation |
N2 fixing bacteria (Rhizobium) and cycanobacteria (Anabaena) produce NH3 that is then incorporated into organic matter |
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Mineralisation during the N cycle |
Organic matter is degraded to NH4+ |
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Nitrification during the N cycle |
aerobic process, NH4+ is oxidised to NO2- (by Nitrosomonas) then to NO3- (by Nitrobacter) |
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Assimilatory N reduction |
NO3- is incorporated into organic matter |
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Dissimilatory N reduction |
NO3- is reduced to NO2- during the anaerobic respiration |
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Denitrification |
NO3- is reduced to N2 during anaerobic respiration (Paracoccus) |
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Anammox Reaction |
Anaerobic process, converts the NH4+ and NO3- into N2 |
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What microbes are responsible for the conversion of NH3 into organic matter? |
Rhizobium and Anabaena |
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What microbe oxidizes NH+ into NO2-? |
Nitrosomonas |
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What microbe is responsible for taking NO2- and converting it into NO3-? |
Nitrobacter |
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During the process of denitrification NO3- is reduced to N2 during anaerobic respiration; what is the microbe that aids in this conversion? |
Paracoccus |
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Which stage of the nitrogen cycle is the only aerobic stage? |
Nitrification |
