What other stains can you use when staining a onion cell?
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What is the purpose of the primary stain in gram staining?
Asked in Acids and Bases
Why are basic dyes more effective at staining bacteria than acidic ones?
Basic dyes have a chromophore that has a positive charge which is attracted to the negative charges on the cell wall of bacteria. Negative stains are negatively charged, so they are repelled from the cell walls of bacteria. Negative stains will stain the background instead of staining the cell directly.
Asked in Onions and Garlic
Did you observe any change in image of the onion cell before and after staining?
Asked in Biology, Microbiology
How did the use of stains advance the study of cells?
Asked in Microbiology
What is the purpose of decoulorising during grams staining?
decoulorising is performed to remove the methyl crystal violet stains if the purple stain is removed, safranin staining performed after decoulorising will stain the cells pink. this means that the cell is gram negative if the crystal violet stains are not removed by decolorising, it means that the cells are gram positive, because these cell have thicker cell walls hence acetone is not able to remove all the purple stains.
Asked in Microbiology, Genetics
What is the function of stains in the observation of cells under a microscope?
Asked in Microbiology
Is a Gram stain an adequate substitute for an acid fast stain?
What are reasons for staining an onion with methylene blue?
Asked in Genetics
Why can one nucleus be visible and the other is not in an onion cell that came right off of the onion?
Asked in Biology, Pollution, Green Living
Why was iodine used to stain onion epidermal cells?
Answer Iodine was used to stain onion epidermal cells so you could see the cells more clearly and examine them. Naturally, the cell parts are difficult to see because they are clear. You put iodine on onion cells in order to make parts of the cell which were translucent, more visible. This is because iodine stains starch present in the onion cell.