Answer:
c)peptidoglycan synthesis and cell walls
Explanation:
The main points of action of antibiotics are inhibition of bacterial cell wall peptideoglycan synthesis, cytoplasmic membrane damage and interference with nucleic acid and protein synthesis.
The bacterial cell wall is formed by peptideoglycan. Penicillin and other antibiotics prevent its complete synthesis, consequently weaken the cell wall and the cell lyses. Because human cells lack peptideoglycan, penicillin has low toxicity to the host cell. The synthesis of peptideoglycan components is affected by β-lactam antibiotics (penicillins and cephalosporins).
For this reason, we can conclude that the antibiotics described in the above question are those that target peptidoglycan and cell wall synthesis.
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