Why are Gram-negative bacteria more resistant than Gram-positive bacteria to damage by certain chemical agents like lysozyme?
A) Gram-negative bacteria contain peptidoglycan in their cell wall.
B) Gram-negative bacteria have a thicker layer of peptidoglycan in their cell wall.
C) Gram-negative bacteria lack a cell wall.
D) Gram-negative bacteria have an outer membrane as part of their cell wall.
E) Gram-negative bacteria have porins.
Answer: D
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