NEET AIPMT SOLVED PAPER 2000

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

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

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

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

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

    Correct Answer: B

    Solution :

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


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