usman collected her saliva and mixed it with liquid a in the test tube . in another test tube she took only liquied a ater about 10 minutes,she added a few drops of indione solution to the mixture in the first test tube it did not show colour but when she treated the other test tube with iodine, a blue black colour apperared now answer the following:
a) what is the aim of this activity?
b) what is liquid A?
c) why did the first test tube not show any collour change with iodine while the second one did ?
d) wich enzyme is rensponsible for such a resalt?
e) why does a picece of broead chewed for long time tasted sweet?
a) what is the aim of this activity?
b) what is liquid A?
c) why did the first test tube not show any collour change with iodine while the second one did ?
d) wich enzyme is rensponsible for such a resalt?
e) why does a picece of broead chewed for long time tasted sweet?
Add an Answer
More Questions From This User See All
Answers & Comments
Answers for the questions are given below-
A) aim of activity is to test the presence of salivary amylase.
B) liquid A is starch.
C) First test tube had saliva added in it, which contained salivary amylase. The enzyme broke starch into its constituent units, and hence iodine could not react with starch.
Thus blue colour complex could not form, which showed up in second test tube, due to presence of starch.
D) Enzyme salivary amylase released from salivary glands in mouth, is responsible for such result.
E) On chewing piece of bread for long time, carbohydrate namely starch is acted upon by salivary amylase. This breaks the starch into glucose, and hence it tastes sweet.