NURSING EXAM QUESTIONS
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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False
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True
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Either A or B
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None of the above
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Detailed explanation-1: -Enzymes responsible for nitrogenase action are very susceptible to destruction by oxygen. For this reason, many bacteria cease production of the enzyme in the presence of oxygen.
Detailed explanation-2: -Nitrogenase is the key enzyme for biological nitrogen fixation. Nitrogenase converts nitrogen to ammonia. It is present in some prokaryotes. The reduction of dinitrogen to ammonia by living organisms is called biological nitrogen fixation.
Detailed explanation-3: -The enzyme nitrogenase is a Mo-Fe protein and catalyses the conversion of atmospheric nitrogen (N2) to ammonia (NH3).
Detailed explanation-4: -The nitrogenase enzyme requires a high input of energy in the form of ATP. ATP is used to transfer hydrogen atoms to dinitrogen during biological nitrogen fixation.