Answer to Question #84560 in Cell Biology for Jenn

Question

To build a protein what building block would you use?
How would you test an unknown solution for each of the following
A)sugar b)fat c)starch d) protein

Answer 1

The main building blocks to create a protein are amino acids. There are 20 amino acids with a different structure. Together they form large protein molecules.

For testing sugar, it is expedient to use Benedict's test, where there is a change in the color of the solution on brick-red. For testing fat, it is possible to use brown paper test (if the paper is translucent there was fat). Starch can be identified using iodine, where there is a change in color. For testing protein, biuret test can be applied. The reaction results in the changing the color of the solution to the violet