This constituent of a gram-positive cell wall absorbs crystal violet but is not dissolved by alcohol, thus giving the gram-positive cell its characteristic purple color.

Question

Quizplus · Accepted Answer

Peptidoglycan is a major component of the gram-positive cell wall and is responsible for retaining the crystal violet stain during the gram staining process. It is not dissolved by alcohol, which allows the cell to remain purple in color. Mycolic acid is found primarily in the cell wall of mycobacteria, which are acid-fast bacteria and are not typically stained using the gram technique. Cholesterol is a component of eukaryotic cell membranes and is not found in the cell walls of bacteria. Carbolfuchsin is a stain used in acid-fast staining methods and is not used in the gram staining technique.

This Constituent of a Gram-Positive Cell Wall Absorbs Crystal Violet