Question

A student was given test tubes containing different protein concentrations. Some tubes contained more concentrated solutions, and others contained more dilute solutions. The test tubes were not labeled, and she was asked to perform a test to determine which tube contained which protein solution. Describe a test that she could carry out to try to distinguish between the protein solutions.

Answer 1

The Biuret test can be used to distinguish between protein solutions by measuring the presence and intensity of the purple color formed when the test reagent reacts with proteins.

Step-by-step explanation:

A test that can be carried out to distinguish between protein solutions is the Biuret test. The Biuret test is a chemical assay that measures the presence of proteins by detecting peptide bonds. When a solution containing proteins is added with the Biuret reagent, a purple color will develop if proteins are present. The intensity of the color can indicate the concentration of proteins in the solution. By comparing the color intensity of the different protein solutions, the student can determine which tube contains which protein solution.