AP BIOLOGY

Detailed explanation-1: -We can use a special reagent called Benedict’s solution to test for simple carbohydrates like glucose. Benedict’s solution is blue but, if simple carbohydrates are present, it will change colour – green/yellow if the amount is low and red if it is high.

Detailed explanation-2: -What is Benedict’s Test? Benedict’s test is a chemical test that can be used to check for the presence of reducing sugars in a given analyte. Therefore, simple carbohydrates containing a free ketone or aldehyde functional group can be identified with this test.

Detailed explanation-3: -Result Interpretation of Benedict’s Test If it changes to orange, then it means that 1 to 1.5 percent sugar is present. If color changes to red, then 1.5 to 2.0 percent sugar is present. And if color changes to brick red, it means that more than 2 percent sugar is present in solution.

Detailed explanation-4: -Benedict’s test: A chemical reaction used to test for the presence of an aldehyde in an unknown, frequently a carbohydrate. To perform the test, one adds Benedict’s solution (a blue solution containing Cu2+) to the material to be tested. If an aldehyde is present, a brick red Cu2O precipitate is formed.