0
What else can I help you with?
Is B subtilis a gram positive or gram negative bacterium?
gram positive Exactly. When doing a gram stain on B. subtilis, this bacterium resists decolorization (keping the first stain and NOT taking on the color of the secondary stain). Therefore, this bacterium is gram (+).
Is S epidermidis gram negative or gram positive?
S. epidermidis is a Gram-positive bacterium. It appears purple when subjected to a Gram stain due to its thick peptidoglycan layer in the cell wall.
Do acid-fast bacteria stain gram-negative when subjected to the gram stain?
No, acid-fast bacteria do not stain gram-negative when subjected to the gram stain.
What color is gram-negative stain?
The color of a gram-negative stain is pink or red. This staining technique is used to differentiate bacteria based on their cell wall composition, with gram-negative bacteria retaining the pink/red color after staining.
What does a negative result for a spore stain indicate about the organism?
A negative result for a spore stain indicates that the organism does not form endospores. Endospore formation is a survival mechanism for some bacteria to withstand harsh environments, so a negative result suggests that the organism may be more susceptible to environmental stressors.
Does candida have a positive or negative gram stain?
Gram positive
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.
Why will gram positive cells stain gram negative?
Contamination
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 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.
Is shigella flexneri gram positive or negative?
When a gram stain is done on Shigella flexneri, the cells are light pink. This means that they are gram negative.
What color is Gram- stain?
Gram- negative bacteria turns red to pink after the gram stain is performed.
Is B subtilis a gram positive or gram negative bacterium?
gram positive Exactly. When doing a gram stain on B. subtilis, this bacterium resists decolorization (keping the first stain and NOT taking on the color of the secondary stain). Therefore, this bacterium is gram (+).
What is the gram stain for cholera?
Gram Negative
Is anthrax gram positive or negative?
Anthrax is a gram-positive bacterium, meaning it retains the crystal violet stain in the Gram staining procedure.
Is food poisoning negative or positive in a Gram stain?
There are a variety of bacteria that can cause foodborne illness: some are Gram-positive, others are Gram-negative. See Related Links.
