Question

a student is testing for the presence of protein, simple sugars, starch, and lipids using the tests summarized in the table below. the student tests an unknown solution using each of the tests and observes that the solution turns blue - black when he tests for protein. which of the following conclusions can the student make? multiple choice the solution contains lipids. the solution contains starch. the solution contains carbohydrates. no conclusion can be drawn; the student made an error.

Explanation:

The iodine test is used to detect starch. A positive result for starch with iodine is a blue - black color. Since the solution turns blue - black when tested with iodine, it indicates the presence of starch.

Answer:

The solution contains starch.