Week 9 Lectorial Questions

Out for lunch with a friend, you go to a new restaurant and both order the burger of the day. It’s a mystery dish, so neither of you know what the ingredients will be! Embarrassingly, as you wait for it to be served, your stomach rumbles so loudly your friend laughs. Once your meals arrive, you eat. You realize that before lunch you were feeling irritable and having trouble concentrating, but that as you eat you begin to feel much better. You loosen the band of your clothes to feel more comfortable.

• Q1. Name the three main nutrients in your burger that the body needs (3 marks)

• Q2. Which nutrient is the preferred source of energy used by the body? (1 mark)

• Q3. Propose a hypothesis to explain why your stomach rumbled and another to explain why your mood and attention improved after eating. (100 words or fewer) (2 marks)

For lunch you and your friend both ordered the same meal. After this meal, your friend experienced diarrhoea. You did not fall ill.

• Q4. Describe the role of gastric juices in the stomach to protect the body from infectious agents. (50 words or fewer) (1 mark)

Your friend is hospitalised and analysis of a faecal sample reveals the diarrhoea was not caused by a bacterium.

• Q5. Describe the role of the small intestine in absorption of water. (50 words or fewer) (1 mark)

• Q6. Propose an explanation for the cause of your friend’s illness. For the illness selected, describe the treatment for the condition. (100 words or fewer) (2 marks)

You are stuck in isolation and decide to do some sit-ups and push-ups. Before you start in on your exercises, you have a carbohydrate-rich snack.

• Q1. Name the metabolic pathway which will break down the carbohydrate snack. (1 mark)

• Q2. Describe the main steps involved in the breakdown of carbohydrates to glucose. (100 words or fewer) (3 marks)

You start to build up a sweat and less oxygen reaches your cells.

• Q3. Describe the effect of a lack of oxygen on the breakdown of carbohydrates. (100 words or fewer) (2 marks)

• Q4. Describe the source of energy that your body would use if you had been fasting for several days and there was no carbohydrate from digestion. (100 words or fewer) (2 marks)

• Q5. Describe the primary cause of pain in muscles during and after exercise. (100 words or fewer) (2 mark)