🏥 USMLE Exam Prep

A 24-year-old male is treated for a severe bacterial infection with an antibiotic that inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit. Which of the following antibiotics is most likely being administered?

A Ciprofloxacin
B Penicillin G
C Azithromycin
D Doxycycline

✓ Correct Answer: Option C

Azithromycin, a macrolide, inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit. Ciprofloxacin targets DNA gyrase, Penicillin G targets cell wall synthesis, and Doxycycline targets the 30S ribosomal subunit.

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