What are the Differences Between Gram-Positive and Gram-Negative Bacteria?
The primary difference lies in their cell wall structure: - Gram-Positive: These bacteria have a thick peptidoglycan layer, which retains the crystal violet stain, appearing purple under a microscope. - Gram-Negative: These bacteria have a thinner peptidoglycan layer and an outer membrane, which does not retain the crystal violet stain but takes up the counterstain safranin, appearing pink.
