Major Difference Between Gram-Positive and Gram-Negative Bacteria
Aug 09, 2022, 16:45 IST
Difference between Gram positive and Gram negative bacteria
Cell wall thickness - 150-200Å.
Cell wallthickness - 75-120Å
Number of layer of cell wall - single
Number of layer of cell wall - two
Cell wall is smooth and in contact with cell membrane thoroughly.
Cell wall is wavy and in contact with cell membrane only at few places.
Lipid content in cellular envelop - 2-4%
Lipid content in cell wall is 20-30%
Peptidoglycan contents - 70-95%
Peptidoglycan contents - 5-20%
Amount of Amino sugars - 10-20%
Amount of Amino sugars - 2-8%
Mesosome - Commonly present
Mesosome - less common
Pili - rarely present
Pili - commonly present
Mostly they are coccus
Flagellation - less common
Flagellation - common
Teichoic acid - present
Teichoic acid - absent
Susceptible to penicillin, sulfonamide, drugs acriflavine, low surface tension, anionic detergents
Susceptible to streptomycin, gentamycin, tetracycline and kanamycin.
Diaminopimelic acid - absent
Diaminopimelic acid - present
In cell wall, porins - absent
In cell wall porins - present
Pathogenic forms - less common
Pathogenic forms - common
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