A Sample had reagent solutions used:

Question

Iodine solution (no change),
Biuret solution (pink),
Benedict's solution (yellow)
and Pure water (control, no change).

There was 2 colour changes.

The sample was found to contain trace amounts of glucose and amino acids. Based on the colour changes observed for this sample, provide a Biochemical explanation for these findings.

Demonstrate biochemistry-based principles behind reagent tests (that can result in more than one observable colour change depending on the amount of solute in the sample).

Answer 1

See my response to the first question below.