1.3 Digestion and the digestive system in humans

Practice questions on Digestion and the digestive system in humans

• Describe the role of enzymes in the digestion of carbohydrates, naming the enzyme involved… (4 marks, Describe)
• Describe what happens to a protein-rich food, such as a piece of chicken, as it passes thr… (4 marks, Describe)
• Explain how the small intestine is adapted to absorb the products of digestion efficiently… (4 marks, Explain)
• Explain why the energy requirements of two people of the same age and body mass may be dif… (4 marks, Explain)
• Explain why a balanced diet must include both water and dietary fibre, even though neither… (4 marks, Explain)
• Explain why a diet that contains sufficient vitamins and minerals is important for maintai… (4 marks, Explain)
• Describe the roles of carbohydrates and fats in the human body. (4 marks, Describe)
• Explain why a person who does not eat enough protein in their diet may develop health prob… (4 marks, Explain)
• Explain why large food molecules must be broken down before they can be used by the body. (4 marks, Explain)
• Explain the roles of bile in the digestion of fats. (4 marks, Explain)