NEET Biology question
Not in NEET syllabus
Statement 1 (Assertion): The nitrogenase enzyme, which catalyses biological nitrogen fixation, functions efficiently under aerobic, oxygen-rich conditions. Statement 2 (Reason): Leghaemoglobin present in root nodules scavenges oxygen to maintain the anaerobic microenvironment required for nitrogenase activity.
Answer: (D)
Solution
Nitrogenase is in fact an oxygen-sensitive enzyme that functions only under anaerobic (not aerobic) conditions, making the Assertion
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