Compare the production of N2 gas by denitrification and anammox. Are they both aerobic processes? What are the implications for a given pool of NO2– and NO3–?
To compare: The production of N2 gas by denitrification and anammox and to find whether these two processes are aerobic.
Introduction: The biogeochemical cycle through which nitrogen is transformed into various chemical forms (as it circulates between the marine ecosystem, terrestrial, and the atmosphere) is known as the nitrogen cycle. In the environment, a wide variety of nitrogen is present in a variety of chemical forms. This includes nitrite (NO2), organic nitrogen (N), nitrous oxide (N2O), ammonia (NH4+), nitric oxide (NO) or inorganic nitrogen gas (N2), and nitrate (NO3).
Explanation of Solution
Denitrification: It is an anaerobic process in which nitrogen gas is generated from nitrate.
Anammox: It is also an anaerobic process in which nitrogen gas is generated, but ammonia is oxidized by using nitrite as the terminal electron acceptor.
To describe: The implication for a given pool of NO2 and NO3.
Explanation of Solution
The implications of both the reactions include a loss of ammonium, nitrate, and nitrite from a system as the generated nitrogen gas gets distributed into the atmosphere.
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Chapter 28 Solutions
Prescott's Microbiology
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