You are performing a Gram stain on Gram-positive bacteria and you stop after the addition of the mordant.What is the appearance of the bacteria at this point?

Question

Quizplus · Accepted Answer

After the addition of the mordant in Gram staining, the crystal violet-iodine complex is retained by the thick peptidoglycan layer of Gram-positive bacteria, leading to the bacteria appearing as purple under the microscope.

You Are Performing a Gram Stain on Gram-Positive Bacteria and You