WB JEE Medical WB JEE Medical Solved Paper-2013

  • question_answer
    The three boxes in this diagram represent the three major biosynthetic pathways  in  aerobic  respiration. Arrows represent net reactants or products Arrows numbered 4, 8 and 12 can all be

    A)  NADH         

    B)  ATP

    C) \[{{H}_{2}}O\]          

    D)  \[Fa{{D}^{+}}or\,FAD{{H}_{2}}\]

    Correct Answer: B

    Solution :

     Pathway A is glycolysis, pathway B is the krebs cycle and pathway C is oxidative phosphorylation Arrow 1 - \[ADP\] or \[NA{{D}^{+}}\] Arrow 2-Pyruvate Arrow 3 - NADH Arrow 4 - ATP Arrow 5 -\[ADP,NA{{D}^{+}}\]or FAD Arrow 6 and \[7-FAD{{H}_{2}}\]and NADH (either one can be 6 or 7) Arrow 8 - ATP or \[C{{O}_{2}}\] Arrow 9 and \[10-{{O}_{2}}\] and ADP (either one can be 9 or 10) Arrow 11 and \[12-{{H}_{2}}O\] and ATP (either one  can be 11 or 12)


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