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The dark iodine stain indicates the presence of starch in a sample. When iodine solution is applied to a substance containing starch, it forms a complex that results in a blue-black coloration. This reaction is commonly used in laboratory settings to test for starch in various materials, such as food or biological samples. The intensity of the color can also give a rough indication of the starch concentration.
What else can I help you with?
What is the result of lugol's test in glycogen?
it should give dark brown color with high concentration of glyogen
Which biological molecule is iodine used to indicate?
Iodine is used to indicate the presence of starch. When iodine comes into contact with starch, it forms a dark blue-black complex, providing a visual indicator of the presence of starch in a biological sample.
If you stain a wet mount of living cells with iodine what are you most likely to see under a microscope?
Iodine is commonly used to stain starch granules within cells. Therefore, if you stain a wet mount of living cells with iodine, you are most likely to see starch granules within the cells stained with a dark color under the microscope.
What is idodine stain?
It is either iodine and it stains starch, or the other way around, starch that stains iodine, likely the former as it is biological. Starch or iodine can be used in chemical titrations also to indicate the presence of the other available in solution.
What chemical can be used to indicate the presence of starch?
The fat titties that I have that boys in my school stare at indicate the boners to the boys with smelly cocks.
Which stain you should use to stain onion peel?
To stain onion peel cells, you should use a stain called iodine. Iodine is commonly used to stain cells because it binds to starches and glycogen in the cells, making the cells more visible under a microscope.
What color does the indicator turn when starch is present?
Iodine is used to indicate whether starch is present in a solution. If starch IS present, the indicator will turn dark blue/black. Iodine is used to indicate whether starch is present in a solution. If starch IS present, the indicator will turn dark blue/black. FOR WHAT PURPOSE WE USE STARCH-IODINE INDICATOR PAPER
What is the difference between Iodine bought in a pharmacy and the Iodine stain solution?
The iodine stain solution you're referring to might be Lugol's iodine. This is iodine and potassium iodide in water. The product available in a pharmacy is tincture of iodine which is iodine and potassium iodide in ethanol and water. Please see the links.
What is the secondary stain in gram stain procedure?
It is crystal violet & stains all cells purple.
What does lugol's iodine stain do to the activity of the cell?
I just did a lab in biology called "How Plant and Animal Cells Differ" and in the packet it had that question. The answer is: Lugol's iodine stain stops the activity of the cell. It kills whatever specimen it is staining.
Why nonstaining iodine not stain skin?
Nonstaining iodine is a type of iodine solution that does not contain iodine in a free form that can bind to skin proteins, which is why it does not stain the skin. This means that it is less likely to leave a visible mark on the skin compared to traditional iodine solutions.
What is the importance of iodine after primary stain?
Iodine is used after the primary stain in the Gram stain procedure to form a complex with the crystal violet dye, which helps to stabilize the dye within the bacterial cell wall. This step enhances the retention of the primary stain in Gram-positive bacteria.
