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Nutrifying bacteriaA. convert free nitrogen to nitrogen compoundsB. convert proteins into ammoniaC. reduce nitrates to free nitrogenD. oxidise ammonia to nitrates

Answer» Correct Answer - A
Nitrifying bacteria (one of the chemosynthetic bacteria) oxidise ammonia to nitrates and obtain energy for the preparation of food. This oxidation occurs in two steps. In the first step, ammonia is oxidised to nitrite by nitrite bacteria, e.g., nitrosomonas and Nitrosococcus.


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