Botany - Mineral Nutrition Question with Solution | TestHub
BotanyMineral NutritionNitrogen MetabolismEasy2 minPYQ_2020
BotanyEasysingle choice
How many protons and electrons are required to fix a dinitrogen?
Options:
Answer:
B
Solution:
In nitrogen-fixing microorganisms, the eight high-potential electrons come from reduced ferredoxin, generated by photosynthesis or oxidative processes. Two molecules of ATP are hydrolyzed for each electron transferred. Thus, at least 16 molecules of ATP are hydrolyzed for each molecule of N2reduced. 8 protons are needed for this reduction.
N2+ 8 e-+ 8 H++ 16 ATP → 2 NH3+ H2+ 16 ADP + 16 iP
Stream:NTA_ABHYAS_NEETSubject:BotanyTopic:Mineral NutritionSubtopic:Nitrogen Metabolism
⏱ 2mℹ️ Source: PYQ_2020
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