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Why doesn't cellulose give a positive iodine test?
cellulose is derived from D-glucose units, which condensed through beta(1->4)-glycosidic bond. This give cellulose to be a straight polymer therefore, it can't coil around iodine to produce blue color as starch does.
How do forensic scientists find fingerprints using iodine?
hold it in there hands
Does paper contain carbon?
Yes, paper comes from trees, and trees are plants, and all plants contain cellulose, it's what makes up the cell wall for plants.
What holds cellulose molecules together in bundles large enough to form fibers?
Hydrogen bonds hold cellulose molecules together in bundles large enough to form fibers..
Is cellulose a carbohydrate?
Cellulose is a carbohydrate.
What colour shows the cellulose with iodine?
deep purple
Why doesn't cellulose give a positive iodine test?
cellulose is derived from D-glucose units, which condensed through beta(1->4)-glycosidic bond. This give cellulose to be a straight polymer therefore, it can't coil around iodine to produce blue color as starch does.
Why does lugol's iodine stain a cell?
iodine indicates polysaccharides, therefore plant cells can be stained with iodine, staining the chloroplasts- composed of starch(a polysaccharide), and the cell wall- composed of cellulose ( a polysaccharide)
Why glycogen gives red colour with iodine?
When Iodine is added to amylose, the helical shape of the unbranched polysaccharide traps Iodine molecules, producing a deep blue-black complex. Amylopectin, cellulose, and Glycogen react with iodine to give red to brown colors. Glycogen produces a reddish-purple color.
How do forensic scientists find fingerprints using iodine?
hold it in there hands
Does paper contain carbon?
Yes, paper comes from trees, and trees are plants, and all plants contain cellulose, it's what makes up the cell wall for plants.
What holds cellulose molecules together in bundles large enough to form fibers?
Hydrogen bonds hold cellulose molecules together in bundles large enough to form fibers..
Is cellulose a carbohydrate?
Cellulose is a carbohydrate.
What is a cellulose sponge made of?
A cellulose sponge is made of, well, cellulose. Cellulose is the main component of plant cell walls, so many plant derived products are cellulose based. Wood is about 50% cellulose, paper and cardboard are almost entirely cellulose, and most plant fibers are mostly cellulose- cotton is about 90% cellulose. the wikipedia article is decent: http://en.wikipedia.org/wiki/Cellulose
How can an iodine stain be used to distinguish between ripe and unripe fruit?
If you add Iodine-KI reagent to foods containing - starch such as bread, potato, crackers, or flour. A blue-black color results.If starch is not present, then the color will stay orange or yellow. (Iodine will not turn blue-black on contact with cellulose or disaccharides such as sucrose in sugar).Thus if you apply Iodine to an unripe fruit (where the sugars are still held as starch) the fruit will turn Blue-Black.However, once the fruit is ripe and the starch has been transformed into sweet sugar, the application of Iodine will only stain the fruit orange or yellow.
What monomer does cellulose have?
cellulose is a polymer. it a chain of repeating monomers. the monomer for cellulose is glucose. cellulose is a polymer. it a chain of repeating monomers. the monomer for cellulose is glucose.
Is cellulose a complex carbohydrate?
Cellulose is a carbohydrate.
