Question:medium
Which of the following is NOT a bacteriostatic antibiotic?
Which of the following is NOT a bacteriostatic antibiotic?
Show Hint
Glycopeptides smash the cell wall - that means killing, not just stalling growth.
Updated On: Jun 24, 2026
- Clindamycin
- Vancomycin
- Tetracycline
- Cephalosporins
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: The task is to spot the bactericidal drug hidden among bacteriostatic ones.
Step 2: Protein-synthesis blockers like tetracycline and clindamycin merely stop bacterial multiplication, so they are bacteriostatic.
Step 3: Vancomycin attacks the cell wall (binding D-Ala-D-Ala to block peptidoglycan cross-linking), which kills the organism outright, making it bactericidal.
Step 4: Hence the one that does not fit the bacteriostatic group is vancomycin.
\[\boxed{\text{Vancomycin}}\]
Step 2: Protein-synthesis blockers like tetracycline and clindamycin merely stop bacterial multiplication, so they are bacteriostatic.
Step 3: Vancomycin attacks the cell wall (binding D-Ala-D-Ala to block peptidoglycan cross-linking), which kills the organism outright, making it bactericidal.
Step 4: Hence the one that does not fit the bacteriostatic group is vancomycin.
\[\boxed{\text{Vancomycin}}\]
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