Question Detail
Question
The differences between Gram positive and Gram negative bacteria is the
Correct Answer
Option A is the correct answer.
Detailed Explanation
The primary difference that the Gram stain exploits is the composition and structure of the bacterial cell wall. Gram-positive bacteria have a thick peptidoglycan layer, while Gram-negative bacteria have a thinner peptidoglycan layer and an outer membrane.
Hint
Consider what part of the bacterial cell interacts most directly with the Gram stain reagents.