Answer to Question #84560 in Cell Biology for Jenn

Question #84560
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
Expert's answer

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

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