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How gram positive bacilli defer from gram negative bacilli in gram stain?
Wiki User
∙ 12y ago
First gentian violet or crystal violet solutn is applied,they bcome purple now iodine is added and acetone or ethyl alcohol is applied gram -ve bacteria lose their color while gram positive bacteria don't
Wiki User
∙ 12y ago
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What is the Normal result of vaginal gram stain?
many gram positive bacilli
How do you get gram positive bacilli?
You do not " get " them, but gram positive bacteria are gram positive because their cell wall is of sufficient thickness and properly constructed to hold the Gram stain. They have one thick wall of peptidoglycan that holds the stain against being washed away. Gram negative bacteria have two thinner walls which allow the stain to be washed away, basically.
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.
Does candida have a positive or negative gram stain?
Gram positive
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.
Why will gram positive cells stain gram negative?
Contamination
How do you know that it is a negative or a positive bacteria?
By which type of stain colors it.
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 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 color are gram negative cells?
Gram positive bacterial stain purple. They do not take up the counter stain.
