Question Detail
Question
A Gram-positive cell wall has many layers of peptidoglycan and retains the crystal violet dye. What color will a Gram-positive cell appear under a microscope after Gram staining?
Correct Answer
Option C is the correct answer.
Detailed Explanation
A Gram-positive cell wall, with its thick peptidoglycan layers, retains the crystal violet-iodine complex even after decolorization. Therefore, it appears purple when viewed under a microscope.
Hint
Remember the initial primary stain in the Gram staining procedure.