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kenneth0125
05.07.2019 •
Biology
What happens to the starch granule of the potato cell when lugol’s iodine solution was added
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Ответ:
It turns dark blue when starch is present, and remains brown when starch is not present. This is basically because iodine forms a polypeptide complex with starch, resulting in the dark blue solution. The amylose, or straight chain portion of starch, forms helices where iodine molecules assemble, forming a dark blue/black color. The amylopectin, or branched portion of starch, forms much shorter helices and iodine molecules are unable to assemble, leading the color to be of an orange/yellow hue. As starch is broken down or hydrolyzed into smaller carbohydrate units, the blue-black color is not produced. (http://food.answers.com/Q/What_happens_to_the_potato_cell_as_iodine_solution_is_added)
Hope this helps
Ответ:
The equation y = 3x represents a proportional relationship, where y represents distance in miles, and x represents time in hours. The point (3, 9) represents that Alonso walks 9 miles in 3 hours. The point (5, 15) represents that Alonso walks 15 miles in 5 hours.