Long answer·Hard exam skill (4/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
Trace the digestion of a meal containing starch, protein and fat from mouth to small intestine. Mention the role of enzymes or secretions at each major step.
Total: 5 marks
(a) Describe digestion in the mouth and stomach. (2 marks)
(b) Describe the role of bile and pancreatic juice in the small intestine. (2 marks)
(c) Explain why the small intestine is suitable for absorption. (1 mark)
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