Why Is Penicillin Ineffective Against Gram-Negative Bacteria

question 41

Multiple Choice

Why is penicillin ineffective against gram-negative bacteria?

• A) Penicillin is not toxic to gram-negative bacteria.
• B) Penicillin is pushed away from the cell membrane by the fimbriae.
• C) Gram-negative bacterial do not have receptors for penicillin to attach to.
• D) Gram-negative bacteria do not have channels or pores in its membrane for penicillin to pass through.
• E) Penicillin cannot reach the thin peptidoglycan layer easily because it is protected by the bacteria's outer membrane.

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