Download Chapter 24 – Digestive System

Biology 4
Sample Exam Questions
Chapter 24 – Digestive System
Choose the best answer for each question. There is only 1 answer for each question.
1. Tooth decay is caused by
a. the acid given off by bacteria acting on dental plaque
b. dental plaque
c. saliva
d. a high sugar diet
2. One of the major functions of the large intestine is to
a. secrete digestive enzymes
b. reabsorb water from chyme
c. regulate the release of bile
d. break down hemoglobin
3. The major function of the gall bladder is to
a. produce bile
b. store bile
c. produce bilirubin
d. filter toxins from the blood
4. Bile is necessary for digestion because it
a. stimulates the secretion of mucus
b. helps in absorbing glucose
c. emulsifies fats
d. converts pepsinogen to pepsin
5. 90% of absorption of digested materials occurs in the
a. stomach
b. small intestine
c. large intestine
d. liver
6. The salivary enzyme amylase functions to digest
a. carbohydrates
b. proteins
c. fats
d. all of the above are true
7. Pancreatic juice is secreted into the
a. stomach
b. small intestine
c. large intestine
d. all of the above
8. Which of the following is a protein-splitting enzyme found in gastric juice?
a. pepsin
b. lysozyme
c. amylase
d. nuclease
9. The liver functions to
a. regulate blood glucose
b. produce bile
c. filter worn out blood cells from the blood
d. all of the above are true
10. HCl (hydrochloric acid) is necessary for digestion because it
a. activates pepsin
b. emulsifies fats
c. helps in absorbing glucose
d. stimulates the secretion of gastric juice