The deep blue color of the starch and iodine solution disappears when it reacts with saliva. which of the following best explains the rate of disappearance of the color when the substances in the test tubes were mixed? faster in bath 1 as molecules

amylase breaks down carbohydrate (starch) .

Explanation:

Iodine is a dimer molecule and when it reacts with starch which is a glucose, it forms deep blue color. In the presence of amylase a digestive enzyme which breaks down starch, comes in contact with the solution, it breaks down the carbohydrate and iodine polymer chains are broken down, and the [blue/black] color disappears.

This experiment is used to test the effect of digestive enzymes on foods (carbohydrates) in this case.