The enzyme complex responsible for the reduction of molecular nitrogen to ammonia in biological nitrogen fixation is:
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Correct answer: Nitrogenase
Nitrogenase is a highly sensitive enzyme found exclusively in prokaryotes. It contains Iron (Fe) and Molybdenum (Mo) and catalyzes the conversion of $N_2$ to $NH_3$.
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More Nitrogen cycle in nature questions
- Which of the following is a free-living, aerobic nitrogen-fixing bacterium?
- The symbiotic nitrogen-fixing bacterium Rhizobium is found in the root nodules of:
- Which microbe forms nitrogen-fixing nodules on the roots of the non-leguminous plant Alnus?
- The pink-colored pigment found in the nodules of leguminous plants, which acts as an oxygen scavenger, is:
- How many molecules of ATP are required for the production of one molecule of $NH_3$ during biological nitrogen fixation?
- During nodule formation, the curling of root hairs is induced by: