Question

Shiju collected his saliva and mixed it with liquid A in the te
tube he took only liquid A. After 10 minuta
in the first test tube. It did not show any colour but when he treated
tube with iodine, a blue black colour appeared. Now answer -
a) What is the aim of this activity?
b) What is liquid A?
c) Why did the first test tube not shown any colour change with
iodine while the second one did?
d) Which enzyme is responsible for such a result?​

Answer 1

Answer:

Explanation:

(a) To test the presence of starch.

(b) Liquid A is flour solution.

(c) Because the first test tube did not contain the saliva and thus the starch. The second test tube contains saliva and thus the starch and hence it turned blue.

(d) The enzyme called- Salivary amylase which is present in our saliva is responsible for such a result.