Question

Which of the following antibiotics is a tetracycline?

• A. Chloramphenicol
• B. Streptomycin
• C. Erythromycin
• D. Doxycycline

Hint:

Tetracyclines like doxycycline act by inhibiting the 30S ribosomal subunit and are used to treat a wide range of infections.

Answer 1

The Correct Option is D

Doxycycline is a broad-spectrum antibiotic that belongs to the tetracycline class. It inhibits bacterial protein synthesis by binding to the 30S ribosomal subunit. The other antibiotics belong to different classes: chloramphenicol (amphenicol), streptomycin (aminoglycoside), and erythromycin (macrolide).