Name:
.
6.1 Digestion Quiz
1.
2.
Celiac disease causes the destruction of the villi cells. Which of the following is most likely to
happen to people with celiac disease?
A.
Incomplete digestion of fats
B.
Poor absorption of calcium
C.
Increased levels of glucose in blood
D.
Damage in the esophagus caused by increase in acid content of the stomach
Which of the following is correct for lipase?
Substrate
3.
Source
pH optimum
A.
triglycerides
pancreas
pH = 8
B.
fatty acids
small intestine
pH = 7
C.
triglycerides
small intestine
pH = 9
D.
fatty acids
pancreas
pH = 9
What processes occur during assimilation and absorption of lipids?
Assimilation
4.
Absorption
A.
lipids are broken down by
enzymes
lipids are egested
B.
lipids are incorporated into new
membranes
lipids pass into the lacteal
C.
lipids pass into the lacteal
lipids are incorporated into new
membranes
D.
lipids are egested
lipids are broken down by
enzymes
Which of the following parts of the digestive system secrete proteases?
Stomach
Small Intestine
Large Intestine
A.
Yes
Yes
Yes
B.
Yes
No
Yes
C.
Yes
No
No
D.
No
No
No
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5.
6.
What is the main function of the large intestine?
A.
Absorption of water
B.
Digestion of fats and proteins
C.
Absorption of nutrients
D.
Recycling of digestive enzymes
What does the digestion of starch by amylase produce?
A.
Lactose
B.
Sucrose
C.
Galactose
D.
Maltose
7. What sequence of organs do substances pass through, as they move through the human digestive
system?
A. mouth  stomach  pancreas small intestine  liver  large intestine  anus
B. mouthstomach small intestine  pancreasliver  large intestine  anus
C. mouthesophagus stomach small intestine  large intestine  anus
D. mouth esophagus  stomach  large intestine  small intestineanus
8. Two cellular activities that support human life are absorption and assimilation. What is needed for
assimilation but not for absorption?
A. Enzymes to synthesize new molecules
B. Blood capillaries
C. Dissolved nutrients
D. Microvilli
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Name:
.
6.1 Digestion Quiz
1. (a) State the missing source, optimum pH requirement, substrate and product of the human
enzymes in the table below. (2)
Enzyme
Source
Optimum pH
Amylase
Salivary gland
7
Lipase
Substrate
Products
Lipids
Fatty acids and glycerol
(b) Explain the need for enzymes in digestion.(2)
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(c)
Draw a labelled diagram to show the interconnections between the gall bladder, pancreas
and small intestine.(3)
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(c)
Explain how the structure of a villus in the small intestine is related to its function. (7)
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