1.Which of the following carbohydrates CANNOT be digested by humans?
A cellulose
C. starch
B. maltose
D. sucrose

2.What do you call the small fingerlike organ where the small and large intestines join?
A ileum
B.appendix
C. epiglottis
D. sphincter muscle

3In which organ does digestion and respiration cross?
A esophagus
b. pharynx
nose
D. gall bladder
B.

4.How does digested food finally reach the bloodstream?
A. It passes through the gullet into the blood.
B. It is absorbed into the blood through blood vessels.
C. It is absorbed into the blood through the walls of the lungs.
D. It passes from the small intestine into the large intestine, then into the blood.

5.The digestive system processes food into usable and unusable materials. The usable
materials are sent to the body's cells as food. What happens to unusable materials?
A. It goes into the pancreas to await disposal,
B. It goes to the right ventricle to await disposal.
C. It goes into the large intestine to await disposal.
D. It goes into the small intestine to await disposal.
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