Question

Describe the biochemistry of biological nitrogen fixation.

03 Feb 2026
Answer :
Word Count : 239
Biological nitrogen fixation is the biochemical process by which atmospheric nitrogen is reduced to ammonia by certain prokaryotes, including free-living bacteria, cyanobacteria, and symbiotic microorganisms associated with plants. Atmospheric nitrogen is chemically inert due to the strong triple bond between nitrogen atoms, and its reduction requires a specialized enzyme system and substantial energy input. The process is catalyzed by the nitrogenase enzyme complex, which consists of two main components: dinitrogenase reductase and
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