Write the overall reaction involved in nitrogen fixation.
GeneralClass 12AllAnswered 27 Mar 2026
Answer
N₂ + 8e⁻ + 8H⁺ + 16ATP → 2NH₃ + H₂ + 16ADP + 16Pᵢ
This reaction demonstrates that nitrogen fixation is highly energy-intensive, requiring 16 ATP molecules to produce just two molecules of ammonia. The enzyme nitrogenase catalyzes this reduction under strictly anaerobic conditions.
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