Digestion Quiz
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5 questions, one answer each
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1. Which enzyme is produced in the pancreas and acts in the small intestine to break down carbohydrates?
- A. Amylase
- B. Protease
- C. Lipase
- D. Pepsin
2. What is the main role of the large intestine in the digestive system?
- A. To produce enzymes that break down nutrients
- B. To absorb water from the undigested food
- C. To neutralise stomach acid
- D. To emulsify fats
3. Villi in the small intestine are adapted for absorption. Which of the following is NOT a structural adaptation of a villus?
- A. Thin epithelial walls to allow diffusion and active transport
- B. A large surface area provided by many finger-like projections
- C. Smooth muscular walls to prevent peristalsis
- D. A good blood supply through capillaries and a lacteal for transport of absorbed nutrients
4. The gall bladder stores bile produced by the liver. Explain why bile is important in fat digestion even though it contains no enzymes.
- A. Bile neutralises stomach acid and emulsifies fats into smaller droplets, increasing surface area for lipase to act on
- B. Bile breaks down fatty acids into glycerol molecules
- C. Bile produces lipase enzymes that break down triglycerides
- D. Bile absorbs fats directly into the bloodstream without needing further digestion
5. A student is studying the pathway of protein digestion through the digestive system. Where does protein digestion begin, and which enzyme is responsible?
- A. In the mouth with amylase
- B. In the oesophagus with protease
- C. In the stomach with pepsin produced by the stomach lining
- D. In the duodenum with trypsin produced by the pancreas