2.29 Digestive enzymes
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Which enzyme digests starch?
(1)Total for this question: 1 mark
2(e) NUTRITION · EXAM QUESTIONS
2.29 Digestive enzymes
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2.29 Digestive enzymes
Exam question
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What are the products of lipid digestion?
(1)Total for this question: 1 mark
2.29 Digestive enzymes
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Where is pepsin (stomach protease) most active?
(1)Total for this question: 1 mark
2.29 Digestive enzymes
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Which enzyme breaks maltose into glucose?
(1)Total for this question: 1 mark
2.29 Digestive enzymes
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Complete the sentences. Amylase breaks down starch into ___. Proteases break down proteins into ___. Lipase breaks down lipids into fatty acids and ___.
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Total for this question: 3 marks
2.29 Digestive enzymes
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Name the enzyme that digests each of the following: (i) starch (ii) protein (iii) lipid.
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Total for this question: 3 marks
2.29 Digestive enzymes
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Give two places where amylase is made.
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Total for this question: 2 marks
2.29 Digestive enzymes
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Explain why large molecules such as starch must be digested.
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Total for this question: 2 marks
2.29 Digestive enzymes
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Explain why amylase from saliva stops working when food reaches the stomach.
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Total for this question: 2 marks
2.29 Digestive enzymes
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Explain how protein in a meal is turned into molecules that cells can use.
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Total for this question: 3 marks
2.29 Digestive enzymes
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Describe the role of the pancreas in the digestion of lipids.
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Total for this question: 2 marks
2.29 Digestive enzymes
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Explain why the products of starch digestion are not all glucose until they reach the small intestine.
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Total for this question: 2 marks
2.29 Digestive enzymes
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A person has a blocked pancreatic duct. Suggest two effects on digestion.
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Total for this question: 2 marks
2.29 Digestive enzymes
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Explain why each digestive enzyme acts on only one type of food molecule.
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Total for this question: 2 marks
2.29 Digestive enzymes
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Amylase digested a starch suspension in 240 seconds at 20 °C and in 80 seconds at 40 °C. Calculate how many times faster the reaction was at 40 °C.
(2)Total for this question: 2 marks