Perform a series of accurate tests on biological molecules to detect the presence of carbohydrates and proteins, as well as the action of an enzyme on specific molecules.
Unknown biological molecules can be correctly identified using various tests, including colorimetric chemical tests. Colorimetric tests are when a chemical reagent, such as Benedict’s, is used on a substance or solution and a certain color change occurs as a response. Carbohydrates and proteins, two of the larger types of biological molecules, also called macromolecules, are actually chains of molecules called polymers. The smaller molecules that build up these chains are …show more content…
PART 1. BIOLOGICAL MOLECULES TESTS | Test A. Benedict’s Test before hydrolysis | Test B. Benedict’s Test after hydrolysis | Test C. Lugol’s solution | Test D. Lugol’s solution after hydrolysis | Test E. Biuret’s Test | Tests for | Reducing sugars | Reducing sugars | Polysaccharides | Polysaccharides | Proteins | 1. dH2O | No Reaction | Blue/ No reaction | Yellow/ No reaction | Yellow/ No reaction | No reaction | 2. glucose | Dark orange | Brownish-orange | Yellow/ No reaction | Yellow/ No reaction | No reaction | 3. sucrose | No Reaction | Reddish-brown | Yellow/ No reaction | Yellow/ No reaction | No reaction | 4. raffinose | No Reaction | Light pink | Yellow/ No reaction | Yellow/ No reaction | No reaction | 5. starch | Yellow precipitate | Dark yellow-orange | blue-violet precipitate | Yellow/ No reaction | No reaction | 6. gelatin | Dark blue | Violet | Slightly opaque white | Yellow/ No reaction | Slightly violet w/ bubbles | 7. milk powder | Orange | Light yellow | No reaction/ No reaction | White precipitate & suspension | Slightly violet w/ bubbles | 8. egg albumin | Light greyish blue | Grey violet | No reaction/ No reaction | Large am. of white