A 24-year-old patient with catarrhal tonsillitis has ben administered a drug from the group of sulfonamides. Specify the mechanism of sulfonamide antibacterial action:

Answer options

1. Competitive antagonism of PABA
2. Reduction of membrane permeability
3. Inhibition of sulfhydryl groups of thiol enzymes
4. Disruption of the cell wall protein synthesis
5. Protein coagulation