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A level Biology: Post your doubts here!

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Nitrification = Aerobic
Nitrogen fixation=Both
Denitrification=Anaerobic

Hey. *Just confused here*. There was this MCQ in one of the 2013 papers and the correct answer there was nitrogen-fixation is aerobic. Can you give some examples that prove how this process is both aerobic and anaerobic? (This CIE mark scheme did baffle me because the enzyme nitrogenase requires anaerobic conditions to process, but then I did an internet search and it revealed that leg-hemoglobin won't remove any oxygen if there's no oxygen available, hence turning aerobic conditions to anaerobic).
 
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Hey. *Just confused here*. There was this MCQ in one of the 2013 papers and the correct answer there was nitrogen-fixation is aerobic. Can you give some examples that prove how this process is both aerobic and anaerobic? (This CIE mark scheme did baffle me because the enzyme nitrogenase requires anaerobic conditions to process, but then I did an internet search and it revealed that leg-hemoglobin won't remove any oxygen if there's no oxygen available, hence turning aerobic conditions to anaerobic).
Look while in Nodules The condition required is Anaerobic while in Soil its Aerobic! let me find out that paper.. then i would let You Know! :)
 
Messages
398
Reaction score
761
Points
73
Hey. *Just confused here*. There was this MCQ in one of the 2013 papers and the correct answer there was nitrogen-fixation is aerobic. Can you give some examples that prove how this process is both aerobic and anaerobic? (This CIE mark scheme did baffle me because the enzyme nitrogenase requires anaerobic conditions to process, but then I did an internet search and it revealed that leg-hemoglobin won't remove any oxygen if there's no oxygen available, hence turning aerobic conditions to anaerobic).
Yes if You read carefully that question Sai Soil conditions so yea Ans Would Be A..
aerobic for Nitrogen fixation in sil
aerobic Nitrification
anaerobic denitrification :)
Need any more Help? :)
 
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