Concept:Penicillin is a beta-lactam antibiotic that inhibits bacterial cell wall synthesis.
Explanation:Penicillin blocks the enzyme transpeptidase, which is responsible for cross-linking peptidoglycan chains in the bacterial cell wall.
This prevents the formation of a rigid cell wall, causing the bacterium to undergo osmotic lysis and die.
Penicillin is bactericidal and is most effective against actively growing Gram-positive bacteria.
It does not affect RNA synthesis, DNA synthesis, or cell division directly.
Answer:cell wall formation in bacteria