Asked by Arianna Perez on May 18, 2024
Verified
Which step of the nitrogen cycle is not performed by most bacteria?
A) Ammonification
B) Denitrification
C) Assimilation
D) Nitrogen fixation
E) Nitrification
Nitrogen Cycle
The series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.
Bacteria
Microscopic, single-celled organisms found in diverse environments, capable of performing various biochemical processes.
Nitrogen Fixation
The chemical processes by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as part of the nitrogen cycle.
- Outline the main sequences of the nitrogen cycle.
Verified Answer
VS
Varian StarkMay 25, 2024
Final Answer :
C
Explanation :
Assimilation is the step in the nitrogen cycle where plants and animals incorporate the NO3- and ammonia formed through fixation, nitrification, and ammonification into organic molecules such as DNA, amino acids, and proteins. Most bacteria are involved in the other steps (ammonification, denitrification, nitrogen fixation, and nitrification) but do not perform assimilation in the same way plants and animals do.
Learning Objectives
- Outline the main sequences of the nitrogen cycle.