What is the function of gram positive?

Answer 1

Gram positive bacterias have a cell wall which will stain in violet color.

The following characteristics are generally present in a Gram-positive bacterium.

1. cytoplasmic lipid membrane
   • teichoic acids and lipoids are present, forming lipoteichoic acids which serve to act as chelating agents, and also for certain types of adherence.
2. thick peptidoglycan layer
3. capsule polysaccharides (only in some species)
   • if present, it contains two rings for support as opposed to four in Gram-negative bacteria because Gram-positive bacteria have only one membrane layer.
4. flagellum (only in some species)

The Gram positive cell wall

The Gram positive cell wall is characterised by the presence of a very thick peptidoglycan layer, which is responsible for the retention of the crystal violet dyes during the Gram staining procedure. It is found exclusively in organisms belonging to the Actinobacteria (or high %G+C Gram positive organisms) and the Firmicutes (or low %G+C Gram positive organisms). Bacteria within the Deinococcus-Thermus group may also exhibit Gram positive staining behaviour but contain some cell wall structures typical of Gram negative organisms. Imbedded in the Gram positive cell wall are polyalcohols called teichoic acids, some of which are lipid-linked to form lipoteichoic acids. Because lipoteichoic acids are covalently linked to lipids within the cytoplasmic membrane they are responsible for linking the peptidoglycan to the cytoplasmic membrane. Teichoic acids give the Gram positive cell wall an overall negative charge due to the presence of phosphodiester bonds between teichoic acid monomers.

Answer 2

Gram positive are bacterial species having thick cell wall and are found in environment and in living organism. The are usefull as well as harmfull to human beings. The usefull function of the bacterial cell is as decomposers mainly. They also used industrially for the production of some important enzymes and antibiotics. The harmfull effect of bacteria is they cause disease in living organism. The are found in bacillus cocci and in chains

Answer 3

Gram-positive bacteria have a thick peptidoglycan layer in their cell wall that retains the crystal violet stain in the Gram staining process. This helps to differentiate them from gram-negative bacteria, which have a thinner peptidoglycan layer. Gram-positive bacteria are known to cause various diseases in humans, such as strep throat, pneumonia, and skin infections.