What Is The Difference Between Gram Positive And Gram Negative

Whereas the cell wall of gram negative bacteria is consisting of thin layers of peptidoglycan.

2 rings in basal body. Gram negative bacteria have cell walls with a thin layer of peptidoglycan. Gram positive bacteria are the group of a heterogeneous bacteria which appear purple in colour when they are stained in the crystal violet dye and examined under a microscope. Gram negative bacteria contain an extra layer of cells called outer membrane or lps layer which surrounds the thin peptidoglycan layer.

Difference between gram positive and gram negative bacterial cell wall the cell wall of gram negative bacteria is more complex than those of gram positive bacteria. Gram positive cells stain purple when subjected to a gram stain procedure. This is due to the difference in the structure of their bacterial cell wall. Both the gram positive and gram negative bacteria are the genus of bacteria family and a member of the phylum firmicutes.

Gram negative bacteria are more resistant against antibodies because their cell wall is impenetrable. Contains higher content of lipids than gram positive bacteria due to presence of outer membrane 9. On adding a counterstain such as safranin or fuchsine after washing gram negative bacteria are stained red or pink while gram positive bacteria retain their crystal violet dye. Besides the above mentioned difference between gram positive and gram negative bacteria let us have some key points.

RELATED ARTICLE :

• what does a spider bite look like on a dog
• what does a spider bite look like at first
• what does ccd stand for in the catholic church

Gram positive bacteria have cell walls composed of thick layers of peptidoglycan. Lps layer is absent in gram positive bacteria. The major difference between gram positive and gram negative bacteria is that gram positive bacteria have a thick peptidoglycan layer in their cell wall while gram negative bacteria have a thin peptidoglycan layer in their cell wall. Absent or lower content of lipids than gram negative bacteria.

The cell wall of gram positive bacteria is consisting of thick layers of peptidoglycan. The gram positive bacteria retain the crystal violet colour and stains purple whereas the gram negative bacteria lose crystal violet and stain red. The difference is clear but in simple explanation gram staining is what makes bacteria to be gram positive or negative and this happens because gram positive bacteria have thick peptidoglycan which retains crystal violet staining dye as opposed to gram. Thus the two types of bacteria are distinguished by gram staining.