Which action best describes the bactericidal effect of a beta-lactam antibiotic such as penicillin?
Correct answer: A. It inhibits bacterial cell wall synthesis
- A. It inhibits bacterial cell wall synthesis
- B. It blocks bacterial folic acid absorption
- C. It prevents viral nucleic acid release
- D. It stops fungal ergosterol formation
Explanation
Beta-lactam antibiotics bind penicillin-binding proteins and inhibit peptidoglycan cross-linking, causing bacterial cell wall rupture. Folic acid inhibition is associated with sulfonamides, while ergosterol formation is a fungal target.
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About Antimicrobial Drugs
Antimicrobial pharmacology covers antibiotics, antitubercular, antifungal, antiviral and antiparasitic drugs, including their targets, clinical uses, resistance and major adverse effects. Questions distinguish bactericidal from bacteriostatic action, narrow from broad spectrum therapy, and antimicrobial treatment from supportive management of infection.
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