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B
Buchner
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C
Fischer
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D
Koshland
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Solution
The correct option is A Kuhne Koshland proposed the induced fit theory in 1958. Part of an enzyme where substrate molecules get attached is known as an active site. On attachment to the active site, the substrate is changed into the product. The active site has a residue which helps in the attachment of substrate. The substrate molecules form a temporary bond with the enzyme at the active site.
According to the induced fit theory of enzyme, the structure of active site of enzyme molds itself according to the shape and size of the substrate.