Bacteria Morphology
The cell walls of Gram positive bacteria contain two modified sugar, viz. N- acetylgucosamine (NAG) and N- acetylmuramic acid (NAM). They are covalently linked by

α- 1,6-glycosidic bond
β-1,6-glycosidic bond
α- 1,4-glycosidic bond
β- 1,4-glycosidic bond

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Bacteria Morphology
Gram positive cells have a

multiple layer of peptidoglycan that helps to retain the crystal violet stain
thick capsule that traps the crystal violet stain
periplasmic space that traps the crystal violet
second outer membrane that helps to retain the crystal violet stain

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