How Penicillin Kills Bacteria

Mechanism of action of Penicillin – “Mechanism of Action: Penicillin” Audio narration (5 sec):

Penicillin is one of the earliest antibiotics. Here’s how it kills bacteria.

🧫 Show bacteria multiplying (10 sec) Narration: Infection begins

when bacteria multiply by building new cell walls. Visual: cartoon bacteria dividing.

🧱 Cell wall structure (10 sec) Narration: Their cell wall contains peptidoglycan

— a mesh-like layer that gives strength. Visual: lattice structure around bacteria.

🔗 Show transpeptidase enzyme (10 sec) Narration: A special enzyme, transpeptidase —

also called penicillin-binding protein — links the peptidoglycan strands. Visual: enzyme acting