gram positive vs gram negative cell wall

 Difference between of cell wall of Gram Positive and gram Negative bacteria

 

Character           gram positive         Gram negative

1. Thickness        Thicker                    Thinner

2. Periplasmic space  Absent          Present

3. Lipids.               Absent or small   Present

4. Teichoic acid    Present.               Absent

5. Peptidoglycan   16-80nm thick multilayer.  2nm thin, single layer

6. Staining               Gram positive cells stain purple during gram staining. Gram negative cells stain pink during gram staining.

7. Outer membrane.      Absent                        Present

8. Periplasmic space.      Absent.                   Present

9. Resistance against antibiotics.   Less resistance to antibiotics.      More resistance to antibiotics.

10. Cell wall         Cell wall is smooth        Cell wall is wavy.

11. Porin.              Absent.                     Present in outer membrane 

12. Lipopolysaccharide.      Usually not found.          High

13. Mesosome.         Mesosome is more prominent.          Mesosome is less prominent

14. Flagella structure.        2 ring in basal body.                   4 ring in basal body

15. Toxins produce.          Primarily exotoxins retain crystal        4 ring in basal body primarily

                                           Violet dye and stain dark violet or.            endotoxins. It can be

                                             purple coloured, They remain                 decolourized to accept 

                                               coloured.                                                  Stain.