Penicillin works by inhibiting the enzyme that catalyzes the formation of cross-links (pentaglycine bridges) in the bacterial cell wall, specifically preventing the synthesis of peptidoglycan, which is crucial for cell wall integrity in bacteria.

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Penicillin

Question 13

Multiple Choice

Penicillin:

A) prevents the linkage between N-acetyl-glucosamine and N-acetylmuramic acid.
B) breaks the bonds between N-acetyl-glucosamine and N-acetylmuramic acid.
C) prevents the formation of pentaglycine bridges.
D) breaks pentaglycine bridges.
E) perforates the plasma membrane of Gram-positive bacteria.

Correct Answer: