The student conducted experiments on pieces of brownie in test tubes to identify nutrients. Iodine turned the test tube black, indicating the presence of starch. Rubbing brownie on filter paper left a clear spot, showing there is fat. Benedict's solution turned the test tube yellow, meaning glucose is present. Tests did not show protein. The document then describes the digestion process, where starch is broken down to glucose in the mouth and stomach, fat is broken down in the small intestine, and nutrients are absorbed in the ileum before waste exits through the anus.
9. Food test
I put 3 pieces of brownie into a 3 test tubes and heres the results
In one brownie test-tube(BTT) I filled it half way with water and added
iodine and it turned black which means that it has starch in it.
I took one piece of brownie and rubbed it against filter paper and the place
were i rubbed it went clear which means that it has fat in it.
I filled another BTT with water and put Benedict solution but we had to
wear glasses because Benedict solution is poisonous. The food went yellow
which means it has glucose.
I filled another BTT with water and Put buret A(ten drops) and buret B (ten
drops)solution an let it sit in a hot water bath. Mine didn't go blue so it
didn't have protein but if it did it would have protein.
10. I put 3 pieces of brownie into a 3 test tubes and heres the results
In one brownie test-tube(BTT) I filled it half way with water and added
iodine and it turned black which means that it has starch in it.
I took one piece of brownie and rubbed it against filter paper and the place
were i rubbed it went clear which means that it has fat in it.
I filled another BTT with water and put Benedict solution but we had to
wear glasses because Benedict solution is poisonous. The food went yellow
which means it has glucose.
I filled another BTT with water and Put buret A(ten drops) and buret B (ten
drops)solution an let it sit in a hot water bath. Mine didn't go blue so it
didn't have protein but if it did it would have protein.
14. Digestion of food
Mouth
In your mouth saliva is made. Saliva
contains Amylase break down the
starch to glucose. Also saliva has
mucus which helps food travel down
your throat.
15. Digestion of food
Mouth
In your mouth saliva is made. Saliva
contains Amylase break down the
starch to glucose. Also saliva has
mucus which helps food travel down
your throat.
19. Digestion of food
Stomach
The stomach juices are mixed with the
brownie and it goes to the duodenum.
The Stomach releases hydro caloric
acids which kill bacteria.
20. Digestion of food
Duodenum down the
Starch enzymes break
starch into glucose. Bile begins to
break down the fat particles. Then
fat enzymes break the fat particles
down even further.
21. Digestion of food
ileum of sugar and
In the ileum the particles
fat get transported all around the body
to provide energy for us. This is because
the particles are small enough to be
absorbed. All thats left is the waste and
water. The food gets absorbed in the
ileum.
22. Digestion of food
Colon
Here is were the water and moisture is
absorbed out of the waste.
