Unit 19 · Organisms and their Environment
Question Bank
Cambridge IGCSE Biology 0610 · 85 questions
Q31Organisms and their Environment
Which bacteria convert ammonium ions to nitrate?
(a)Denitrifying bacteria
(b)Nitrogen-fixing bacteria
(c)Decomposers
(d)Nitrifying bacteria
Correct answer: (d) Nitrifying bacteria
Explanation: Nitrifying bacteria oxidise ammonium to nitrite and then nitrate.
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19. Organisms and Their EnvironmentOrganisms and their Environment Tags