Learning About Macromolecules

This lab focused on the identification of macromolecules through common indicators. We used four different indicators for these specific macromolecules: iodine, benedict's, sudan III, and biuret. Iodine tests for the presence of starch, benedict's tests for glucose, sudan III tests for fats, and biuret is used as a protein indicator.

 

Using a plate with 12 individual dishes, we tested various mixtures of solutions that were prepared by Mr. Quick. We tested each of them for proteins, fats, glucose, or starch. For the proteins, we used Biurets. A positive indicator woud be a light lavender color as seen in dish 9. For fats, the Sudan III would become red and contain little globules inside. This was seen in dish 3&4. The iodine, as stated before, was supposed to turn a deep blue color as seen in dish 7. The glucose was tested in hot water baths and expected to turn orange, similar to the last blog post.