Which may result in Gram-positive bacteria appearing to be Gram-negative?

Name: Which may result in Gram-positive bacteria appearing to be Gram-negative?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Decolorizing too long can remove the crystal violet stain from Gram-positive bacteria, making them appear Gram-negative. Using old cultures can also lead to a similar outcome because the cell walls of older Gram-positive bacteria may not retain the crystal violet stain as effectively, leading to a false Gram-negative appearance.

Which May Result in Gram-Positive Bacteria Appearing to Be Gram-Negative