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Gram stain is used to determine whether the cell is gram positive or negative. Gram positive is when the cell has very thick layers of peptidoglycan, and gram negative when the layers are thin. In the staining process, those that decolorize easily are gram negative, and the one that retain the primary stain are gram positive. The acid fast staining is a techique that stains only the gram positive and only the genuses of mycobacterium, nocardia, and actinomycetes.
Wiki User
∙ 15y ago
Wiki User
∙ 10y agoThe Gram stain procedure involves the addition of two dyes to a bacterial culture.
One of them, the Gram stain itself (also called "crystal violet"), sticks to the coating of some kinds of bacteria, but not to others. The ones it sticks to are called "Gram-positive"; the ones it doesn't, "Gram-negative".
A counterstain (usually a light pink color) is applied afterward. This sticks to everything, but doesn't show up if the more intense Gram stain is also present, so Gram-positive bacteria appear violet, while the Gram-negatives ones appear pinkish.
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What color is Gram- stain?
Gram- negative bacteria turns red to pink after the gram stain is performed.
What does gram negative on a serratia marcescens gram stain mean?
Bacteria are gram positive or gram negative. Serratia happens to be a gram negative bacteria. They appear pink on a gram stain. Gram positive bacteria stain to a purple color on a gram stain. We can classify and ID bacteria using their gram stain and shape. Some antibiotics only work on gram negative bacteria and some only work on gram positive bacteria. It helps a doctor know which antibiotic to use.
What is the different reaction of Gram-negative and Gram-positive bacteria to Gram's stain testing?
Gram-positive bacteria which take up the stain turn purple, while Gram-negative bacteria which do not take up the stain turn red.
What color is gram negative stain and gram positive stain if you forget to apply iodine?
If iodine is not applied, both the gram-positive and gram-negative stains will appear to be gram-negative. The iodine acts as a mordant that helps to fix the crystal violet stain in the gram-positive bacteria, making them appear purple. Without iodine, the crystal violet stain can be easily washed out of both gram-positive and gram-negative bacteria, resulting in a pink or red color.
What is the gram stain of enterobacter cloacae?
Negative
What is the gram stain for cholera?
Gram Negative
What color is Gram- stain?
Gram- negative bacteria turns red to pink after the gram stain is performed.
What is the Gram stain result of Salmonella?
Gram Negative.
Is HIV gram stain positive or negative?
The answer to whether HIV gram-stain positive or negative is that HIV gram-stain is negative. They retain the light red or pink color after the stain.
What Gram stain is acetobacter?
Gram negative
What does gram negative on a serratia marcescens gram stain mean?
Bacteria are gram positive or gram negative. Serratia happens to be a gram negative bacteria. They appear pink on a gram stain. Gram positive bacteria stain to a purple color on a gram stain. We can classify and ID bacteria using their gram stain and shape. Some antibiotics only work on gram negative bacteria and some only work on gram positive bacteria. It helps a doctor know which antibiotic to use.
What is the different reaction of Gram-negative and Gram-positive bacteria to Gram's stain testing?
Gram-positive bacteria which take up the stain turn purple, while Gram-negative bacteria which do not take up the stain turn red.
Does candida have a positive or negative gram stain?
Gram positive
Why will gram positive cells stain gram negative?
Contamination
Does yogurt stain gram positive or gram negative?
positive
What does a negative result for a spore stain indicate about the organism?
A negative result for the spores stain indicate that the gram-negative organism is present. A positive result for a spore stain indicates that a gram positive organism is present.
What is the Gram stain for measles?
Bacteria stain either gram-positive or gram-negative based on the presence or absence of a cell wall. Viruses do not pick up a gram stain.
