A patient is treated with ciprofloxacin for a bacterial infection. What is the primary mechanism of action of ciprofloxacin?

The correct answer to the question "A patient is treated with ciprofloxacin for a bacterial infection. What is the primary mechanism of action of ciprofloxacin?" is Option C: Inhibition of bacterial DNA gyrase and topoisomerase IV.

The other options — A) Inhibition of bacterial cell wall synthesis, B) Disruption of bacterial ribosomal protein synthesis, D) Interference with folic acid synthesis — are incorrect for this USMLE Exam Prep question. As explained above: Ciprofloxacin belongs to the fluoroquinolone class of antibiotics. Its primary mechanism of action involves inhibiting bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, enzymes crucial fo…