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Biology, 18.12.2020 18:40 BXSUPREME939
Benedict’s solution tests for the presence of glucose, and iodine solution tests for the presence of starch. In the presence of those molecules, the indicator mixture will change colors. A student is performing a carbohydrate lab in class and is using their data chart of knowns to determine the identity of unknown substances. After placing 2 mL of the unknown carbohydrate solution in the test tube, the student drops in 5 drops of Benedict’s solution and places it in a hot water bath for 3 minutes. They observe that there is no color change. What claim can the student make about the carbohydrate in the test tube?
A. The carbohydrate must be a disaccharide because there was no color change for the Benedict’s test
B. The carbohydrate must be a polysaccharide because there was no color change for the Benedict’s test.
C. The carbohydrate must be a monosaccharide because there was no color change for the Benedict’s test.
D. The carbohydrate must be a disaccharide or polysaccharide, but the student has not collected enough data to correctly determine which yet
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