Question Detail
Question
Which of the following is a typical Gram-positive bacterium?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Staphylococcus species are well-known Gram-positive bacteria, characterized by their thick peptidoglycan cell wall which retains the crystal violet stain. Neisseria, Escherichia coli, and Salmonella are Gram-negative.
Hint
Think about common cocci that are medically significant and their Gram stain reaction.