Mineral Nutrition
4 NEET Biology previous year questions on Mineral Nutrition — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.
The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are
[NEET 2020]
Ammonia and hydrogen
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In the root nodules of leguminous plants, the enzyme nitrogenase is responsible for biological nitrogen fixation.
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It converts atmospheric nitrogen gas (N₂) into ammonia (NH₃) using energy from ATP and reducing power from ferredoxin or other sources.
\({\text{N}}_{2}+8{H}^{+}+8{e}^{−}+16ATP\to 2N{H}_{3}+{H}_{2}+16ADP+16Pi\)
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As you can see, hydrogen gas (H₂) is also produced as a byproduct along with ammonia.
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Oxygen is not a product — in fact, nitrogenase is highly sensitive to oxygen and works in an anaerobic environment maintained by leghemoglobin in root nodules.
In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as
[Re-NEET 2020]
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Which of the following elements helps in maintaining the structure of ribosomes?
[Re-NEET 2020]
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Which micronutrient is required for splitting of water molecule during photosynthesis?
[NEET 2023]
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