AFMC AFMC Solved Paper-2007

  • question_answer
    Fixation of one molecule of \[C{{O}_{2}}\]through Calvin cycle requires

    A) 3 ATP and 3 \[\text{NADP}{{\text{H}}_{\text{2}}}\]molecules

    B) 3 ATP and 2 \[\text{NADP}{{\text{H}}_{\text{2}}}\]molecules

    C) 2 ATP and 1 \[\text{NADP}{{\text{H}}_{\text{2}}}\]molecule

    D) 1 ATP and 2 \[\text{NADP}{{\text{H}}_{\text{2}}}\]molecules

    Correct Answer: B

    Solution :

    2 ATP are required during conversion of PGA to1, 3 diphosphoglyceric acid and 1 ATP during conversion of glyceraldehyde phosphate to ribulosebiphosphate. 2 \[NAD{{H}_{2}}\]molecules are utilized for converting 1, 3 diphosphoglyceric acid to glyceraldehyde phosphate.


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