When nitrate is used as a final electron acceptor by bacteria growing in anoxic soils,the nitrogen is no longer available for the construction of precursor metabolites.This is referred to as

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Dissimilatory nitrate reduction is a process where bacteria use nitrate as a final electron acceptor in the absence of oxygen, releasing nitrogen gas in the process. This means that the nitrogen is no longer available for the construction of precursor metabolites, which are needed for growth and metabolism. Nitrification involves the conversion of ammonia to nitrate, and nitrogen fixation involves the conversion of atmospheric nitrogen to a form that can be used by organisms. Nitrogen respiration is not a commonly used term in microbiology.

When Nitrate Is Used as a Final Electron Acceptor by Bacteria