A certain compound X occupied a site of an enzyme rather than that of the active site. This immediately resulted in the change of shape of the active site. X is called ______
A
competitive inhibitor
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B
non-competitive inhibitor
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C
competitive messenger
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D
receptor
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Solution
The correct option is B non-competitive inhibitor Non-competitive inhibitors are drugs that affect the catalytic activity of enzymes by changing the shape of the active site by binding to the enzyme at some other site. This site is called allosteric site. This action prevents the substrate from binding to the enzyme.