VMMC VMMC Medical Solved Paper-2013

  • question_answer
    The enzyme decarboxylase catalyses

    A)  fumaric acid to malic acid                   

    B)  malic acid to oxaloacetic acid                 

    C)  conversion of citric acid to c/s aconitic acid

    D)  oxalosuccinic acid to \[\alpha -\]ketoglutaric acid

    Correct Answer: D

    Solution :

     Oxalosuccinate is decarboxylated to formed \[\alpha -\]ketoglutarate   through   the   enzyme decarboxylase. This is one of the step involved in Krebs cycle. This release on molecule of \[C{{O}_{2}}.\] \[Oxalosuccinate\xrightarrow[M{{g}^{2+}}]{Decarboxylase}\] \[\alpha -\]ketoglutarate \[+\,C{{O}_{2}}\]


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