In contrast to Gram-negative bacteria, Gram-positive bacteria have a(n):

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Gram-positive bacteria have a thick layer of peptidoglycan in their cell wall, which gives them a characteristic purple color when stained with crystal violet and iodine. This peptidoglycan layer is much thicker than that of Gram-negative bacteria and is responsible for many of the unique features of Gram-positive bacteria, such as their ability to form spores and resist antibiotics. Gram-positive bacteria also lack an outer lipopolysaccharide layer, which is characteristic of Gram-negative bacteria.

In Contrast to Gram-Negative Bacteria, Gram-Positive Bacteria Have A(n)