Question

Antibiotics cure disease by

• A. Competitive inhibition
• B. Fighting with the disease causing organism
• C. Turning the pathogen out of the body
• D. Removing the pain

Answer 1

Answer: (A)

Competitive inhibition

Antibiotics serve as metabolic analogs and control the microbial growth by competing with the necessary enzyme to halt the growth of bacterial cells. Antibiotics occupy the enzyme’s active site thereby blocking the binding of its natural substrate to the enzyme. This puts the whole pathway to halt. Inhibition of enzyme activity by a metabolic analog of the natural substrate is termed as competitive inhibition.

Therefore, the correct answer is option A.