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What is Gentian violet colouration of gram positive bacteria is due to ? and explain in detail?
Ans. is 'a' i.e., Peptidoglycan GRAM STAINING The gram stain differentiates bacteria into two broad groups :? Gram positive - Resist decolourization and retain primary stain, appear violet. Gram negative - Decolourised by organic solvents, and therefore, take the counterstain, appearing red.