Nitrate (NO3- ) reduced into ammonia (NH3) is called
A) redox.
B) dissimilative reduction of nitrate to ammonia (DRNA).
C) ammonification.
D) nitrification.

Question

Quizplus · Accepted Answer

The process of reducing nitrate (NO3-) into ammonia (NH3) is known as dissimilative reduction of nitrate to ammonia (DRNA). This process is carried out by microorganisms in anaerobic conditions and is important for the nitrogen cycle. Option A is incorrect as redox is a general term for any chemical reaction where there is a transfer of electrons. Option C is incorrect as ammonification is the process where organic nitrogen is converted into ammonia by decomposers. Option D is incorrect as nitrification is the process by which ammonia (NH3) is converted to nitrite (NO2-) and then to nitrate (NO3-), which is the opposite of DRNA.

Nitrate (NO3- ) Reduced into Ammonia (NH3) Is Called