3. Liquid Coffee Mate has many ingredients includingcorn syrup solids, vegetable oil, and sodium caseinate (a milkderivative). Classify each of these substances into the followingcategories of macromolecules: carbohydrates, lipids, or proteins.Which substance(s) is/are responsible for the result you obtainedwith the biuret reagent?
4. Research the substance pepsin. What is it used for?If you were to test the enzyme amylase, what result would youexpect with the biuret reagent? Why?
5. You enjoy the following snack one afternoon: a can ofPepsi, pretzels, and sliced apples with peanut butter. Would any ofthese four food items yield a positive result with biuret reagent?If so, which one(s) and why?
