CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2000

  • question_answer
    The enzymes which are used to convert starch into ethyl alcohol are:

    A)  maltase, diastase

    B)  diastase, maltase, zymase

    C)  invertase, zymase

    D)  invertase, diastase, maltase

    E)  none of the above

    Correct Answer: B

    Solution :

    \[\underset{starch}{\mathop{2{{({{C}_{6}}{{H}_{10}}{{O}_{5}})}_{n}}}}\,+n{{H}_{2}}O\xrightarrow{diastase}\underset{maltose}{\mathop{n{{C}_{12}}{{H}_{22}}{{O}_{11}}}}\,\] \[{{C}_{12}}{{H}_{22}}{{O}_{11}}+{{H}_{2}}O\xrightarrow{maltase}\underset{glucose}{\mathop{2{{C}_{6}}{{H}_{12}}{{O}_{6}}}}\,\] \[\underset{glu\cos e}{\mathop{{{C}_{6}}{{H}_{12}}{{O}_{6}}}}\,\xrightarrow{zymase}2{{C}_{2}}{{H}_{5}}OH+2\,C{{O}_{2}}\]


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