Question Detail
Question
Nitrites are converted to nitrates in the second stage of nitrification by bacteria such as:
Correct Answer
Option C is the correct answer.
Detailed Explanation
Nitrobacter and Nitrocystis are the bacteria responsible for converting nitrites (NO2-) into nitrates (NO3-).
Hint
The name of this bacteria suggests it works on compounds related to 'nitro-' (nitrates).