Gram-positive bacteria would stain ____ in a gram stain because of a thick layer of ____ in their cell walls.
A) green; cellulose
B) red; polysaccharides
C) green; peptidoglycan
D) purple; peptidoglycan
E) purple; polysaccharides

Question

Quizplus · Accepted Answer

Gram-positive bacteria stain purple in a Gram stain due to the thick layer of peptidoglycan in their cell walls, which retains the crystal violet stain.

Gram-Positive Bacteria Would Stain ____ in a Gram Stain Because