Biology · Kingdom Prokaryote
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In nitrogen-fixing bacteria, the nitrogenase complex is sensitive to:
- A
O2
- B
CO2
- C
NO2
- D
NO3
Nitrogen fixing bacteria contain an enzyme complex known as Nitrogenase which catalyses the conversion of nitrogen gas to ammonia. The nitrogenase complex is sensitive to oxygen. Oxygen will make the enzyme irreversibly inactive. So, the nitrogen-fixing bacteria needs to protect the nitrogenase enzyme from oxygen.
Correct. Nitrogenase is highly sensitive to oxygen, which can irreversibly inactivate the enzyme, necessitating protective mechanisms in nitrogen-fixing bacteria.
Incorrect. Carbon dioxide does not inactivate the nitrogenase enzyme. It is not a threat to the nitrogenase complex in nitrogen-fixing bacteria.
Incorrect. Nitrite (NO2) does not directly affect the nitrogenase enzyme's activity in nitrogen-fixing bacteria.
Incorrect. Nitrate (NO3) does not affect the activity of the nitrogenase enzyme in the same way oxygen does.
Tagged under Biology · Kingdom Prokaryote · 2018