Question

Consider the following three statements about enzyme inhibitor drug –
(i) It decreases the catalytic action of enzyme
(ii) It prevents the binding of substrate to enzyme
(iii) It can be of both competitive or non-competitive type
Which of the above statements are correct?

• A. Only (i)
• B. (i) and (ii)
• C. (i) and (iii)
• D. All

Answer 1

The correct option is D All

Enzyme inhibitors inhibit the catalytic action of enzymes. It prevents the binding of substrates to enzymes either by competing with natural substrates for attachment to active sites of enzymes or by changing shape of the active sites by attaching itself to allosteric sites.