EAMCET Medical EAMCET Medical Solved Paper-2010

  • question_answer
    Eight molecules of an enzyme solution is mixed with 1000 molecules of the substrate in a reaction mixture. If it converts 80% of the substrate into product in five minutes, then its turnover number is

    A)  10                                         

    B)  15

    C)  20                                         

    D)  60

    Correct Answer: C

    Solution :

                     As, 8 enzyme molecules catalysed = 1000 substrate molecule \[\therefore \] 1 enzyme molecule will catalyse = 125 substrate molecules. Since in 5 minutes,80% of substrate converted into product ie,  \[\frac{125\times 80}{100}\]part of substrate is converted into product. \[\therefore \] In 1 minute, the number of molecules catalyses by 1 enzyme molecule \[=\frac{125\times 80}{100\times 5}=20\] Hence, die turnover of enzyme is 20.


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