Difference between Gram positive bacteria and Gram negative bacteria are in tabular form below –
In this article we have given detailed and main comparison between Gram positive bacteria and Gram negative bacteria. Difference between Gram positive bacteria and Gram negative bacteria
No. |
Gram positive bacteria |
Gram negative bacteria |
Definition |
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1. | When the membrane of bacteria is thick or the peptidoglycan of bacteria is thick then it is known as Gram positive bacteria. | When the membrane of bacteria is thin or the peptidoglycan of bacteria is thin then it is known as Gram negative bacteria. |
Cell wall |
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2. | The gram positive bacteria has smooth cell wall. | The gram negative bacteria has wavy cell wall. |
Colour under microscope |
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3. | Under the microscope, these bacteria appear in purple colour. | Under the microscope, these bacteria appear in pink colour. |
Cell wall thickness |
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4. | In these bacteria, cell wall thickness is around 20-80 nm. | In these bacteria, cell wall thickness is around 5-10 nm. |
Lipid and lipoprotein |
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5. | The cell wall of these bacteria contains low lipid and lipoprotein. | The cell wall of these bacteria contains high lipid and lipoprotein. |
Examples |
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6. | Bacillus, Corynebacterium and Actinomyces. | Encterobacter, Borrelia, and Chlamydia. |