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NEET AIPMT SOLVED PAPER 2001

  • question_answer
                                      Enzyme first used for nitrogen fixation is:                                                                                            

    A)                 nitrogenase

    B)                 nitroreductase

    C)                 transferase

    D)                 transaminase

    Correct Answer: A

    Solution :

                    In the process of biological nitrogen fixation, the dinitrogen molecule is reduced by the addition of pairs of hydrogen in the presence of enzyme nitrogenase. Nitrate reducatase and nitrite reductase come into picture at later stage (for nitrate assimiliation). 


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