Some infectious diseases caused by bacteria are treated with sulfanilamides which block the synthesis of bacteria growth factor. What is the mechanism of their action?

Answer options

1. They are allosteric enzyme inhibitors
2. They are allosteric enzymes
3. They are antivitamins of para-amino benzoic acid
4. They inhibit the absorption of folic acid
5. They are involved in redox processes

Explanation

Sulfanilamide is an anti-bacterial drug that inhibits the function of PABA (Para Aminobenzoic Acid).