Question

Enzyme molecules normally interact with substrate molecules. Some medicines work by blocking enzyme activity in pathogens. These medicines are effective because:

A. They are the same size as the enzyme
B. They are the same size as the substrate molecules
C. Have a shape that fits in the enzyme
D. Have a shape that fits into all cell receptors

Answer 1

Enzyme inhibitors fit into the active site of the enzyme blocking catalytic activity of the enzyme.