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Crystal violet attaches to Staphylococcus due to its ability to bind to the peptidoglycan layer of the bacterial cell wall. Staphylococcus species, being Gram-positive bacteria, have a thick peptidoglycan layer that retains the dye during the Gram staining process. This interaction is largely due to the positive charge of crystal violet, which is attracted to the negatively charged components of the bacterial cell wall. As a result, the dye effectively stains the cells, allowing for their identification under a microscope.

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3mo ago

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Does Staphylococcus grow on non crystal violet MacConkey agar?

Staphylococcus will not grow on Mac since crystal violet inhibits the growth of Gram positivesfmchinea: Actually some species of staphylococcus grow on MacConkey's plate including Staphylococcus aureus.


Will s aureus grow on a crystal violet agar plate?

Staphylococcus aureus can grow on crystal violet agar plates as crystal violet agar is a selective medium that inhibits the growth of Gram-negative bacteria and allows the growth of Gram-positive bacteria like S. aureus.


What is the charge of crystal violet?

The charge of crystal violet is positive.


Why is Iodine used in Gram staining?

Iodine is used in Gram staining as a mordant, which helps to bind the crystal violet dye to the cell wall of bacteria. This mordant-iodine complex forms larger complexes with the crystal violet dye, making it difficult for the dye to be washed away during the decolorization step. This allows for differentiation of Gram-positive and Gram-negative bacteria based on their ability to retain the crystal violet dye.


Is the crystal violet test result positive or negative?

The crystal violet test result is positive.


What is the secondary stain in gram stain procedure?

It is crystal violet & stains all cells purple.


What does crystal violet bind to in biological systems?

Crystal violet binds to nucleic acids, specifically DNA, in biological systems.


What is gentian violet?

Traditional antifungal drugs such as.gentian violet (also known as crystal violet)


What is the extinction coefficient of crystal violet?

The extinction coefficient of crystal violet is approximately 89,000 M^(-1)cm^(-1) at a wavelength of 590 nm. This value indicates the molar absorptivity of crystal violet at this specific wavelength, which is commonly used for measuring the concentration of crystal violet in solution using spectrophotometry.


What is the gram reaction of s epidermidis?

Staphylococcus epidermidis is a Gram-positive bacterium, meaning it retains the crystal violet stain in the Gram staining procedure. This results in a purple color under the microscope.


Does crystal violet have a color?

Yes, crystal violet is a triarylmethane dye that appears as a deep purple color when dissolved in water or other solvents.


Is crystal violet considered a primary stain in the Gram staining technique?

Yes, crystal violet is considered a primary stain in the Gram staining technique.