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BHU PMT BHU PMT (Screening) Solved Paper-2011

  • question_answer
    In the higher plants, nitrate ions absorbed from the soil are converted to ammonia in two steps. In second step, the electrons required for reduction of nitrite ions are donated by

    A)  cytochrome \[{{\text{P}}_{\text{450}}}\]            

    B)  nitrate reductase

    C)  ferredoxin                        

    D)  nitrite reductase

    Correct Answer: B

    Solution :

                     The nitrogen in nitrate form is taken by plants preferentially. They are first reduced to nitrites by the enzyme nitrate reductase.


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