what are gram positive and gram negative bacteria?
Class 11 biology chapter 8 cell the basic unit of life
- Riya
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KaustubhKP
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1. Gram-positive bacteria have multilayered cell walls while gram-negative bacteria have single layered walls.
2. Gram-positive bacteria gives purple color in a crystal violet dye while gram-negative bacteria don't react with crystal violet dye and also go reverse thus giving pinkish colored stain.
3. Gram-negative bacteria are penicillin resistant whereas gram-positive bacteria responds to penicillin treatment.
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