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Boss quiz

10 questions on the whole topic. You get one try at each.

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  1. Which nutrient is the body’s main source of energy?

    • Carbohydrate
    • Fibre
    • Protein
    • Vitamins

  2. What does the body use protein for?

    • Making bile
    • Seeing in dim light
    • Keeping food moving through the gut
    • Growth and repair

  3. Which mineral is needed for red blood cells?

    • Vitamin C
    • Iron
    • Starch
    • Calcium

  4. What is the energy in food measured in?

    • Degrees Celsius (°C)
    • Newtons (N)
    • Grams (g)
    • Kilojoules (kJ)

  5. Scurvy is a deficiency disease. Which nutrient is missing from the diet?

    • Vitamin C
    • Vitamin D
    • Protein
    • Iron

  6. In which organ is digestion completed?

    • The liver
    • The stomach
    • The small intestine
    • The large intestine

  7. Which organ absorbs water from undigested food and forms faeces?

    • The stomach
    • The gullet
    • The pancreas
    • The large intestine

  8. What do enzymes do in digestion?

    • They squeeze food along the gut
    • They absorb water from food
    • They kill the microorganisms in food
    • They speed up the breaking down of large molecules

  9. How do villi help the small intestine?

    • They kill microorganisms
    • They store faeces
    • They give it a large surface area for absorbing food
    • They churn the food

  10. What do gut bacteria do?

    • They chew food into pieces
    • They make the acid in the stomach
    • They pump blood to the gut
    • They help to break down food
Answers
  1. Carbohydrate. Carbohydrates, such as starch and sugars, are the main source of energy.
  2. Growth and repair. Protein is used to build new tissue.
  3. Iron. Iron is needed for red blood cells. Too little iron causes anaemia.
  4. Kilojoules (kJ). A food label gives the energy in kilojoules.
  5. Vitamin C. Fresh fruit and vegetables give vitamin C.
  6. The small intestine. Digestion is completed in the small intestine. The food is absorbed into the blood there too.
  7. The large intestine. Water is absorbed in the large intestine. What is left forms faeces.
  8. They speed up the breaking down of large molecules. Enzymes are biological catalysts.
  9. They give it a large surface area for absorbing food. A large surface area means that food is absorbed quickly.
  10. They help to break down food. Gut bacteria help to break down food that you cannot digest, such as fibre.