Human Digestive System - Higher Difficulty Problems
Q. What is the primary function of bile in digestion?
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A.
Break down proteins
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B.
Emulsify fats
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C.
Neutralize stomach acid
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D.
Absorb vitamins
Solution
Bile emulsifies fats, making them easier to digest and absorb in the small intestine.
Correct Answer: B — Emulsify fats
Q. What is the role of the villi in the small intestine?
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A.
Increase surface area for absorption
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B.
Secrete digestive enzymes
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C.
Transport waste
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D.
Produce bile
Solution
Villi increase the surface area of the small intestine, enhancing nutrient absorption.
Correct Answer: A — Increase surface area for absorption
Q. Which of the following is NOT a function of the stomach?
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A.
Digestion of proteins
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B.
Storage of food
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C.
Absorption of nutrients
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D.
Secretion of gastric acid
Solution
The stomach primarily digests proteins and stores food, but it does not absorb nutrients.
Correct Answer: C — Absorption of nutrients
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