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  4. The' lock and key' theory of enzyme structure and function was proposed by

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Q. The' lock and key' theory of enzyme structure and function was proposed by

Chhattisgarh PMTChhattisgarh PMT 2009

Solution:

Emil Fischer $(1894)$ proposed 'lock and key' Theory to explain the mechanism of enzyme Action. According to this theory, the active sites To form 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.