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Haryana PMT Haryana PMT Solved Paper-2009

  • question_answer
    The lock and key theory of enzyme structure and function was proposed by

    A)  Morgan                              

    B)  Robertson

    C)  Brown                                 

    D)  Fischer

    Correct Answer: C

    Solution :

                    Emil Fischer (1894) proposed lock and key2 theory to explain the mechanism of enzyme action. According to this theory, the active sites of enzyme have a specific geometric shape where in the substrate molecule gets fitted to form enzyme-substrate complex. This is like the fitting of a key to a particular lock.


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