Name ___________________________________ Date
___________ Test 1
CHAPTER 38 ‑ Digestive System
MULTIPLE CHOICE
Write the letter of the answer that best
completes each statement.
1. Meat, fish, poultry, and eggs are good
sources of
a. fats. c. carbohydrates.
b. proteins. d. minerals.
2. The physical action of breaking food into
smaller parts is called
a. peristalsis. c. mechanical digestion.
b. chemical digestion. d. absorption.
3. The substance that is produced by the
liver and breaks up fat molecules is
a. pepsin. c. bile.
b. ptyalin. d. amylase.
4. The flap of tissue that closes over the windpipe
and prevents food or
water from entering it is the
a. esophagus. c. bile duct.
b. epiglottis. d. pancreas.
5. Fruits, vegetables, and grain products
are good sources of
a. fats. c. carbohydrates.
b. proteins. d. minerals.
6. After leaving the mouth, food enters the
a. small intestine. c. large intestine.
b. esophagus. d. stomach.
7. Chemical digestion begins in the
a. esophagus. c. stomach.
b. mouth. d. small intestine.
8. What is the largest and heaviest organ of
the body?
a. pancreas. c. gallbladder
b. liver d. large intestine
9. What are the wavelike muscular
contractions in the digestive system
called?
a. chemical digestion c. elimination
b. mechanical digestion d. peristalsis
10. Substances that help control chemical
reactions in the body are
a. ptyalin. c. ulcers.
b. villi. d. enzymes.
11. Which organ produces both pancreatic
juice and insulin?
a. gallbladder c. liver
b. pancreas d. small intestine
12. Vitamins are sometimes called
micronutrients because they are needed by
the body
a. in large amounts. c. in small amounts.
b. only once a month. d. once daily.
13. Carbohydrates and fats are both used for
a. repair of tissues. c. sources of energy.
b. strong bones and teeth. d. dissolving substances.
14. Which teeth are used to bite into food?
a. canines c. molars
b. incisors d. eye teeth
15. The opening through which wastes are
eliminated from the body is the
a. bile duct. c. rectum.
b. anus. d. pancreatic duct.
16. The chemical substance that is contained
in saliva and breaks down
starches into sugars is
a. hemoglobin. c. pepsin.
b. ptyalin. d. amylase.
17. Digested food is carried to all the cells
of the body by the
a. esophagus. c. blood.
b. skin. d. nerves.
18. The mineral that is needed for strong
bones, teeth, and muscles is
a. iron. c. zinc.
b. sodium. d. calcium.
19. Which nutrients are needed to build and
repair body parts and manufacture
enzymes?
a. minerals c. vitamins
b. fats d. proteins
20. The energy value of food is measured in
units called
a. Calories. c. carbohydrates.
b.
meters. d. liters.
21. Fat‑soluble vitamins are stored in
a. water. c. proteins.
b. starches. d. body fat.
22. After leaving the stomach, food enters
the
a. ileum c. jejenum.
b. esophagus. d. duodenum.
23. An organ located where the small
intestine and large intestine meet is the
a. gallbladder. c. appendix.
b. pancreas. d. liver.
24. A mineral that is needed for good
hemoglobin formation is
a. calcium c. iron
b. chlorine d. sodium
25. Nutrients are absorbed into the blood
through the walls of the
a. small intestine. c. gallbladder.
b. large intestine. d. appendix.
26. The breaking down of food into simpler
substances for use by the body is
the work of the
a. circulatory system. c. respiratory system.
b. nervous system. d. digestive system.
27. Sugars and starches are examples of
a. carbohydrates. c. fats.
b. proteins. d. vitamins.
28. Teeth that grind and crush food into
small pieces are
a. molars. c. canines.
b. incisors. d. eye teeth.
29. Proteins are made up of chains of
a. amino acids. c. minerals.
b. carbohydrates. d. starches.
30. Mechanical digestion begins in the
a. esophagus. c. stomach.
b. mouth. d. large intestine.
TRUE OR FALSE
Determine whether each statement is true
or false.
31. Water is absorbed in the large intestine.
32. The appendix aids in the chemical
digestion of food.
33. Sugars can be digested and used for fuel
faster than starches.
34. Mechanical digestion is the physical
action of breaking food down into
smaller parts.
35. Water‑soluble vitamins are stored
in body fat.
36. In the stomach, food undergoes both
chemical and mechanical digestion.
37. Water helps the human body maintain a
constant temperature.
38. A Calorie is equal to the amount of heat
energy needed to raise the temperature of 1 kg of water by 1oC.
39. The average human body is 55 to 75
percent water.
40. Nutrients are absorbed into the
bloodstream through villi in the large intestine.
COMPLETION
Fill in the word or number that best
completes each statement.
41. Nutrients that are needed to build and
repair body parts are _____.
42. Proteins are made up of chains of _____.
43. A J‑shaped muscular organ connected
to the end of the esophagus is the
_____.
44. Most of the water contained in undigested
food is removed in the _____.
45. Bile is produced by the _____.
46. In _____ digestion, food is broken down
by enzymes.
47. The inner walls of the small intestine
are covered with fingerlike projections
called _____.
48. _____ is the gastric juice released by
the cells in the stomach.
CRITICAL THINKING AND APPLICATION
Discuss each of the following in a brief
paragraph.
49. List the six basic nutrients. Give an
example of a food source for each nutrient.
50. Explain the difference between a fat‑soluble
vitamin and a water‑soluble
vitamin.
51. Explain why the liver and pancreas are
called digestive helpers.
52. For the following diagrams label each
part of the digestive tract.(21 marks)
51. Fill in the following chart.
ANSWER KEY1
1. b
2. c
3. c
4. b
5. c
6. b
7. b
8. b
9. d
10. d
11. b
12. c
13. c
14. b
15. b
16. b
17. c
18. d
19. d
20. a
21. d
22. d
23. c
24. c
25. a
26. d
27. a
28. a
29. a
30. b
31. T
32. F
33. T
34. T
35. F
36. T
37. T
38. T
39. T
40. F
41. proteins
42. amino acids
43. stomach
44. large intestine
45. liver
46. chemical
47. villi
48. Pepsin
49. Proteins, meat; carbohydrates, cereal;
fats, butter; vitamins, fruits;
minerals, milk; and water, all foods.
50. see chart
52. A fat‑soluble vitamin is stored in
body fat. A water‑soluble vitamin is
constantly being washed out of the body.
53. Food never enters the liver or the
pancreas. Rather, both organs produce
substances that aid in digestion and are
released into the small
intestine. The liver produces bile and
the pancreas produces pancreatic
juice.
Name ___________________________________ Date
___________ Test2
CHAPTER 38 ‑ Digestive System
MULTIPLE CHOICE
Write the letter of the answer that best
completes each statement.
1. After leaving the stomach, food enters
the
a. ileum c. jejenum.
b. esophagus. d. duodenum.
2. Mechanical digestion begins in the
a. esophagus. c. stomach.
b. mouth. d. large intestine.
3. The mineral that is needed for strong
bones, teeth, and muscles is
a. iron. c. zinc.
b. sodium. d. calcium.
4. What is the largest and heaviest organ of
the body?
a. pancreas. c. gallbladder
b. liver d. large intestine
5. Substances that help control chemical
reactions in the body are
a. ptyalin. c. ulcers.
b. villi. d. enzymes.
6. Sugars and starches are examples of
a. carbohydrates. c. fats.
b. proteins. d. vitamins.
7. The physical action of breaking food into
smaller parts is called
a. peristalsis. c. mechanical digestion.
b. chemical digestion. d. absorption.
8. Chemical digestion begins in the
a. esophagus. c. stomach.
b. mouth. d. small intestine.
9. The flap of tissue that closes over the
windpipe and prevents food or
water from entering it is the
a. esophagus. c. bile duct.
b. epiglottis. d. pancreas.
10. Which organ produces both pancreatic
juice and insulin?
a. gallbladder c. liver
b. pancreas d. small intestine
11. Carbohydrates and fats are both used for
a. repair of tissues. c. sources of energy.
b. strong bones and teeth. d. dissolving substances.
12. An organ located where the small
intestine and large intestine meet is the
a. gallbladder. c. appendix.
b. pancreas. d. liver.
13. What are the wavelike muscular
contractions in the digestive system
called?
a. chemical digestion c. elimination
b. mechanical digestion d. peristalsis
14. Which teeth are used to bite into food?
a. canines c. molars
b. incisors d. eye teeth
15. A mineral that is needed for good
hemoglobin formation is
a. calcium c. iron
b. chlorine d. sodium
16. The breaking down of food into simpler
substances for use by the body is
the work of the
a. circulatory system. c. respiratory system.
b. nervous system. d. digestive system.
17. The opening through which wastes are
eliminated from the body is the
a. bile duct. c. rectum.
b. anus. d. pancreatic duct.
18. Fruits, vegetables, and grain products
are good sources of
a. fats. c. carbohydrates.
b. proteins. d. minerals.
19. Vitamins are sometimes called
micronutrients because they are needed by the body
a. in large amounts. c. in small amounts.
b. only once a month. d. once daily.
20. Meat, fish, poultry, and eggs are good
sources of
a. fats. c. carbohydrates.
b. proteins. d. minerals.
21. The energy value of food is measured in
units called
a. Calories. c. carbohydrates.
b. meters. d. liters.
22. The substance that is produced by the
liver and breaks up fat molecules is
a. pepsin. c. bile.
b. ptyalin. d. amylase.
23. Nutrients are absorbed into the blood
through the walls of the
a. small intestine. c. gallbladder.
b. large intestine. d. appendix.
24. The chemical substance that is contained
in saliva and breaks down
starches into sugars is
a. hemoglobin. c. pepsin.
b. ptyalin. d. amylase.
25. Fat‑soluble vitamins are stored in
a. water. c. proteins.
b. starches. d. body fat.
26. After leaving the mouth, food enters the
a. small intestine. c. large intestine.
b. esophagus. d. stomach.
27. Which nutrients are needed to build and
repair body parts and manufacture enzymes?
a. minerals c. vitamins
b. fats d. proteins
28. Digested food is carried to all the
cells of the body by the
a. esophagus. c. blood.
b.
skin. d. nerves.
29. Teeth that grind and crush food into
small pieces are
a. molars. c. canines.
b. incisors. d. eye teeth.
30. Proteins are made up of chains of
a. amino acids. c. minerals.
b. carbohydrates. d. starches.
TRUE OR FALSE
Determine whether each statement is true
or false.
31. A Calorie is equal to the amount of heat
energy needed to raise the temperature
of 1 kg of water by 1oC.
32. Mechanical digestion is the physical
action of breaking food down into
smaller parts.
33. In the stomach, food undergoes both
chemical and mechanical digestion.
34. Water helps the human body maintain a
constant temperature.
35. Water is absorbed in the large intestine.
36. The appendix aids in the chemical
digestion of food.
37. Sugars can be digested and used for fuel
faster than starches.
38. The average human body is 55 to 75
percent water.
39. Nutrients are absorbed into the
bloodstream through villi in the large intestine.
40. Water‑soluble vitamins are stored
in body fat.
COMPLETION
Fill in the word or number that best
completes each statement.
41. Bile is produced by the _____.
42. Proteins are made up of chains of _____.
43. The inner walls of the small intestine
are covered with fingerlike projections
called _____.
44. Most of the water contained in undigested
food is removed in the _____.
45. In _____ digestion, food is broken down
by enzymes.
46. _____ is the gastric juice released by
the cells in the stomach.
47. A J‑shaped muscular organ connected
to the end of the esophagus is the
_____.
48. Nutrients that are needed to build and
repair body parts are _____.
CRITICAL THINKING AND APPLICATION
Discuss each of the following in a brief
paragraph.
49. Explain the difference between a fat‑soluble
vitamin and a water‑soluble
vitamin.
50. Explain why the liver and pancreas are
called digestive helpers.
51. List the six basic nutrients. Give an
example of a food source for each
nutrient.
52. For the following diagrams label each
part of the digestive tract.(21 marks)
53. Fill in the following chart.
ANSWER KEY2
1. d
2. b
3. d
4. b
5. d
6. a
7. c
8. b
9. b
10. b
11. c
12. c
13. d
14. b
15. c
16. d
17. b
18. c
19. c
20. b
21. a
22. c
23. a
24. b
25. d
26. b
27. d
28. c
29. a
30. a
31. T
32. T
33. T
34. T
35. T
36. F
37. T
38. T
39. F
40. F
41. liver
42. amino acids
43. villi
44. large intestine
45. chemical
46. Pepsin
47. stomach
48. proteins
49. A fat‑soluble vitamin is stored in
body fat. A water‑soluble vitamin is
constantly being washed out of the body.
50. Food never enters the liver or the
pancreas. Rather, both organs produce
substances that aid in digestion and are released into the small intestine. The liver produces bile and the
pancreas produces pancreatic juice.
51. Proteins, meat; carbohydrates, cereal;
fats, butter; vitamins, fruits; minerals, milk; and water, all foods.
52. see chart