Answer :
Final answer:
Testing a potato with biuret reagent will likely show no significant color change, indicating a negative result for proteins, since potatoes are rich in starch and not protein.
Explanation:
If you test a sample of a potato with the biuret reagent, you should expect to see a color change if proteins are present. The biuret reagent reacts with peptide bonds, which are found in proteins, producing a color change to violet or pink in positive cases. However, potatoes primarily contain starch and not protein, so you would likely see no significant color change, indicating a negative result for proteins. During a biuret test, one typically observes the sample for any color development, with a violet or pink hue indicating the presence of proteins.