1. What happens after we put food in our
Mouths?
How does it become us?

2. Write the following on the back :
Digestion is the process of breaking down food polymers into monomers to be absorbed and recycled by the body.
A calorie is a unit of measurement that equals the amount of heat required to raise one liter of water 1 degree Celsius.

3. Draw a small Key for the colors on the Bottom of your paper.
carbohydrates=
Protein =
Lipids =
Nucleic acids =

4. 1
Mouth
starts mechanical digestion. Food broken into small pieces.

5. Salivary glands
Chemical digestion Enzyme amylase breaks down starches (carbs) into sugar

6. Esophagus
Tube for food
from mouth to
stomach.

7. Stomach
Chemical and
mechanical
action. It releases
Mucus to protect &
lubricate
Hydrochloric acid
pepsin
to digest proteins.

8. Pancreas
makes insulin
(used to regulate
blood sugar levels)
neutralizes
stomach acid.
Release enzymes to
Break down:
proteins
fats
Nucleic Acids

9. Liver
Makes bile which is
stored in the gall
bladder.

10. Gallbladder
stores bile which acts like a detergent to break down fats (lipids) we eat.

11. Small intestine
a sight of:
chemical digestion
absorption of
nutrients.

12. Large intestine
Food that enters the Lg. Intestine is mostly cellulose (fiber), water & indigestible matter.
Removes water from waste and returns it to bloodstream.

13. Appendix
No longer used to digest tough
fibrous leaves our ancestors ate.

14. Anus
Fiber and indigestible matter leave body as waste
(fecal material)
If large intestine fails to remove excess water you have diarrhea.

15. Carbohydrates
Lipids
Used to
Fry
Potatoes &
Starch
(Carbs.)
Protein
Found in
Meat &
Cheese
Lipids
Nucleic
Acids
In fresh food
Lettuce
tomatoes
To test for sugar
(carbs.) use
Benedict’s Solution
Blue & heat
If there is sugar
The color changes
To orange.