Aug 18, 2014 · Macromolecule Test Positive Control Color Change Negative Control Color Change Starch (Carbs) Iodine Corn Starch Water Lipid Brown Bag Vegetable Oil Water Protein Biuret Protein Powder Water 4.
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** Each test tube should have only ONE food item in it. Add 5 drops of Lugol’s Iodine to each test tube. Gently. shake the contents of each test tube. Note: Iodine causes complex carbohydrates to turn dark blue or black. Substances without starch are colored brown by the iodine, but do not react with it.
The presence of starch can be detected with iodine. In the iodine test, the starch molecule reacts strongly with iodine to form a deep blue-black complex. If starch is not present no blue-black complex will form. Both Benedict’s solution and Iodine solutions are used as indicators. Scientists make use of
Heyaa folk, Polypeptide chain is made up of macromolecule which is made up amino acids.
Biological macromolecules fall into four categories: carbohydrates, proteins, lipids and nucleic Biological macromolecules called lipids come in two forms, triglycerides and phospholipids. The RNA outside of the cell manufactures proteins. The human body does not use nucleic acid for energy.
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