Question

Which of the following is not correct regarding competitive inhibition?

• A. The inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme.
• B. They cannot be used to control bacterial pathogens.
• C. Inhibition of succinic dehydrogenase by malonate which closely resembles the substance succinate in structure is an example of it.
• D. Substrate cannot bind in such type of inhibition thus enzyme activity declines.

Answer 1

Answer: (B)

Competitive inhibition is a type of inhibition process observed for enzymes. In this, the competitive inhibitor closely resembles the structure of substrate and binds to the same site of the enzyme. Thus, blocking the binding of the substrate and slowing down the enzyme activity. Competitive inhibition is often used in the control of many bacterial pathogens.