Digestive System Quest- (U)
Name: ______________________________
Multiple Choice- Identify the choice that best completes the statement or answers the question. (34 marks)
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1. Which of the following is not a category of macromolecule?
a. nucleic acids
c. lipids
b. metabolites
d. carbohydrates
e.
proteins
2. A carbohydrate can be a simple sugar or a
a. lipid
c. glycemia
b. polypeptide
d. sucralose
e.
polysaccharide
3. What is an important feature of lipids? They are
a. made of carbon atoms
d.
b. the main component in sweat
c. the basic parts of digestive juices
insoluble in water
4. Proteins are made up of long chains of
a. nucleic acids
c. glycerides
b. monosaccharides
d. amino acids
e.
Magical unicorn dust
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5. A herbivore would have a significantly more of these teeth opposed to a carnivore?
a. Incisors
c. Molars
b. Canines
d. They would be the same
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6. The nutrients in food are broken down by enzymes so that they can be
a. absorbed
b. acidified
c. expelled
d. neutralized
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7. What do enzymes break lipids into?
a. monosaccharides
b. amino acids
c. glycerol and fatty acids
d.
e.
e. sterilized
bile salts
nucleotides
8. The four steps of digestion do not include
a. alimentation
c. digestion
b. ingestion
d. absorption
e.
elimination
9. The digestive tract in most animals moves food in a wave-like involuntary movement. What is this movement called?
a. gullet
c. peristalsis
e. intestinal movement
b. alimentary contractions
d. capillary action
____ 10. Chemical breakdown of nutrients starts in the
a. mouth
c. duodenum
b. stomach
d. jejunum
e.
____ 11. The pancreas secretes enzymes and bicarbonate into the
a. esophagus
c. duodenum
b. stomach
d. jejunum
e.
ileum
ileum
____ 12. Most of the enzymes in the body are produced in the accessory organs. Through which structure do these enzymes
enter the gastrointestinal tract.
a. Alimentary canal
d. Common bile duct
b. Urinary bladder
e. aorta
c. kidneys
____ 13. What is the role of the protease pepsin?
a. to break polysaccharides into disaccharides
b. to break proteins into small polypeptides
c. to break polysaccharides into monosaccharides
d. to break fat droplets into glycerol and fatty acids
e. to break peptides into amino acids
____ 14. What is the role of lipase?
a. to break polysaccharides into disaccharides
b. to break proteins into small polypeptides
c. to break polysaccharides into monosaccharides
d. to break fat droplets into glycerol and fatty acids
e. to break peptides into amino acids
Identify the structure that best matches the function described.
a. teeth
ab. cardiac sphincter
b. gall bladder
ac. duodenum
c. villi
ad. liver
d. tongue
ae. esophagus
e. parotid glands
bc. pancreas
____ 15. rolls food into a bolus
____ 16. location where chyme is neutralized so that enzymes can digest nutrients
____ 17. secretes bile, which contains bile salts needed for digestion of fat
____ 18. stores bile that is added to chyme to help break up fats
____ 19. break food into smaller pieces
____ 20. tube that pushes food into the stomach
____ 21. muscles that close the stomach and prevent backflow of acids
____ 22. produces enzymes that are used to digest nutrients in the intestines
____ 23. folds in intestines where nutrients are absorbed
____ 24. moisten food with slippery substance
25. Label the following diagram:
/ 10
A: ___________________________________
B: ___________________________________
C: ___________________________________
D: ___________________________________
E: ___________________________________
F: ___________________________________
G: ___________________________________
H: ___________________________________
I: ____________________________________
J: ___________________________________
Short Answer: Be sure to read the questions fully before answering. Part marks will be given if sufficient information is
provided. Please use the digestive vocabulary we learned to describe things. (12 marks)
1.
What is mechanical digestion? How is mechanical digestion different from chemical digestion? (2
marks)
2.
What is heartburn? What causes this condition? (2 marks)
3.
How are the respiratory and digestive systems connected? How do they work together to keep
you alive? (2 marks)
4.
How would a diet pill that stops enzyme production in your body, cause you to loose weight? Is
this healthy? Why or why not? Explain your thinking. (3 marks)
5.
The pH of stomach acids is very acidic. Why do the stomach cells not self-digest? What is a
stomach ulcer? (2 marks)