Science 8 · Unit 7: Diet and growth · Cambridge Lower Secondary Science Stage 8

Questions

1. 1. What is the main function of protein?

   • helping night vision
   • growth (making new cells)
   • absorbing calcium
   • making haemoglobin
   Check

2. 2. What is carbohydrate mainly used for?

   • night vision
   • making strong bones
   • making haemoglobin
   • releasing energy in respiration
   Check

3. 3. What two jobs does fat do in the body?

   • release energy and form an insulating energy store under the skin
   • make haemoglobin and help vision
   • absorb calcium and iron
   • build muscle and bones
   Check

4. 4. Which vitamin keeps skin strong and helps it heal?

   • vitamin C
   • vitamin D
   • vitamin K
   • vitamin A
   Check

5. 5. Which vitamin helps with night vision?

   • vitamin B
   • vitamin D
   • vitamin C
   • vitamin A
   Check

6. 6. Which vitamin helps us absorb calcium?

   • vitamin A
   • vitamin C
   • vitamin E
   • vitamin D
   Check

7. 7. Which mineral is needed for strong bones and teeth?

   • calcium
   • sodium
   • iron
   • zinc
   Check

8. 8. Which mineral is needed to make haemoglobin?

   • calcium
   • sodium
   • iron
   • potassium
   Check

9. 9. Why do we need water?

   • It gives lots of energy.
   • It is a solvent for many chemicals in the body.
   • It builds muscle.
   • It is a protein.
   Check

10. 10. Look at the table (nutrients in 100 g of each food). Which food contains the most protein?

    • brazil nuts
    • fish
    • chicken
    • chapatis
    Check

11. 11. Look at the table. Which food contains the most vitamin C?

    • milk
    • tomatoes
    • orange
    • brazil nuts
    Check

12. 12. Look at the table. The amounts are for 100 g of food. How much fat is in 200 g of milk?

    • 8 g
    • 400 g
    • 4 g
    • 2 g
    Check

13. 13. Look at the table. Brazil nuts have 60 g of fat and 180 mg of calcium. Which is there more of by mass?

    • fat
    • calcium
    Check

14. 14. Look at the table. Which food would be best for a child with weak teeth and bones?

    • fish, which has no carbohydrate
    • brazil nuts, which are highest in calcium
    • tomatoes, which are low in fat
    • chicken, which is highest in protein
    Check

15. 15. What are good sources of protein?

    • oil and butter
    • lettuce and cucumber
    • meat, fish and pulses
    • sugar and sweets
    Check

16. 16. How many milligrams are in 1 gram?

    • 100
    • 1000
    • 10
    • 1 000 000
    Check

17. 17. Which illness is caused by not eating enough iron?

    • rickets
    • constipation
    • scurvy
    • anaemia
    Check

18. 18. Which illness can children get without enough vitamin D, stopping their bones growing normally?

    • scurvy
    • anaemia
    • diabetes
    • rickets
    Check

19. 19. Where does most people's vitamin D come from?

    • from drinking water
    • from breathing air
    • from eating sweets
    • It is made in the skin when sunlight falls on it.
    Check

20. 20. Where does the body keep its long-term energy store?

    • as water in the blood
    • as protein in the hair
    • as calcium in the bones
    • as fat under the skin and around organs
    Check