Question:
Vancomycin is
Vancomycin is
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Antibiotics are grouped into chemical classes based on their structure, and each class has a typical mechanism of action. Identifying the class helps predict the drug's spectrum and side effects.
Updated On: Jun 24, 2026
- Glycopeptide antibiotic
- Oxazolidinone antibiotic
- Lincosamide antibiotic
- Aminoglycoside antibiotic
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The Correct Option is A
Solution and Explanation
Concept:
Antibiotics are grouped into chemical classes based on their structure, and each class has a typical mechanism of action. Identifying the class helps predict the drug's spectrum and side effects.
How it works: Vancomycin is a glycopeptide antibiotic. It inhibits bacterial cell-wall synthesis by binding to the D-alanyl-D-alanine terminus of cell-wall precursors, preventing peptidoglycan cross-linking. It is especially important against resistant Gram-positive organisms such as MRSA.
Why the other choices are wrong: Oxazolidinones (e.g. linezolid), lincosamides (e.g. clindamycin) and aminoglycosides (e.g. gentamicin) are all distinct classes that act on protein synthesis, not cell-wall building in the glycopeptide manner.
Answer: Option (1) — Vancomycin is a glycopeptide antibiotic. (1)
Antibiotics are grouped into chemical classes based on their structure, and each class has a typical mechanism of action. Identifying the class helps predict the drug's spectrum and side effects.
How it works: Vancomycin is a glycopeptide antibiotic. It inhibits bacterial cell-wall synthesis by binding to the D-alanyl-D-alanine terminus of cell-wall precursors, preventing peptidoglycan cross-linking. It is especially important against resistant Gram-positive organisms such as MRSA.
Why the other choices are wrong: Oxazolidinones (e.g. linezolid), lincosamides (e.g. clindamycin) and aminoglycosides (e.g. gentamicin) are all distinct classes that act on protein synthesis, not cell-wall building in the glycopeptide manner.
Answer: Option (1) — Vancomycin is a glycopeptide antibiotic. (1)
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