Question

2.20 unit 2: biochemistry summative test
you are doing a lab testing for biomolecules. you add benedicts solution to a food sample and boil it for 3 - 5 minutes. you notice it changes color from light
blue to yellow/orange color. this result shows the food sample is positive for

Explanation:

Benedict's solution is used to test for reducing sugars (simple sugars/monosaccharides). When it reacts with reducing sugars and is heated, it changes color. A color change from light blue to yellow/orange indicates a positive result for simple sugars/monosaccharides. Proteins are tested with Biuret's reagent (color change to violet), and lipids are tested with Sudan dyes or ethanol - emulsion test.

Answer:

simple sugar/monosaccharide