Nitrifying bacteria convert

  1. nitrates into nitrogen gas
  2. proteins into amino acids
  3. ammonium ions into nitrate ions
  4. nitrogen gas into ammonia
Answer

C) ammonium ions into nitrate ions

Nitrification makes nitrates. O Level Biology · Topic 19 Relationships of Organisms with One Another and with the Environment · 19.2 Nutrient cycles

Biology MCQ · More O Level Biology: Organisms and the Environment MCQs · Practise