What are Gram-Negative Bacteria?
Gram-negative bacteria are bacteria which do not turn purple in the Gram Staining process used as a basic step in the identification of bacteria. All bacteria can be divided into either gram-positive or gram-negative bacteria, reflecting key differences in the composition of their cell walls. These differences often have a direct influence on what the bacteria does, with some gram-negative bacteria being pathogenic in nature.
Gram-negative bacteria are bacteria which do not turn purple in the Gram staining process used as a basic step in the identification of bacteria. Most bacteria can be divided into either Gram-positive or Gram-negative bacteria, reflecting key differences in the composition of their cell walls. These differences often have a direct influence on what the bacteria does, with some Gram-negative bacteria being pathogenic in nature.
Gram-negative bacteria are bacteria which do not turn purple in the Gram staining process used as a basic step in the identification of bacteria. Most bacteria can be divided into either Gram-positive or Gram-negative bacteria, reflecting key differences in the composition of their cell walls. These differences often have a direct influence on what the bacteria does, with some Gram-negative bacteria being pathogenic in nature. The Gram stain was developed in 1884 by Hans Christian Gram. In this process, bacteria is fixed on a slide and then bathed in crystal violet, the primary staining solution. All of the cells on the slide turn purple, after which a mordant such as iodine is added to fix the color. Then, a decolorizer is added to the slide. If the bacteria is Gram-negative, the decolorizer will wash the crystal violet away, because the permeable cell wall does not allow the crystal violet to stain the bacteria. Then, a secondary stain is added, turning Gram-negative bacteria a pale
