Question

What is the meaning of gram positive and gram negative bacteria?

Answer 1

Gram positive and gram negativerefers to the type of cell wall thatbacteria have. ... Bacteria that have cell walls made up of peptidoglycan are termed gram positive. Thesebacteria retain primary stain crystal violet and are not decolorised by alcohol treatment during GramStaining.

Answer 2

Gram positive bacteria retain the colour of the crystal violet stain in the gram stain. Whereas gram negative bacteria do not retain the colour of the crystal violet stain in the gram stain.

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