The antibiotic penicillin can kill invading bacteria without harming human cells because it targets bacterial :
- A. Cell wall ✓
- B. Plasma membrane
- C. Ribosome
- D. Chromosome
Correct Answer: A. Cell wall
Explanation
Penicillin acts by inhibiting the synthesis of peptidoglycan, an essential component of the bacterial cell wall, which human cells lack entirely.
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