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O LevelBiologyCambridgeExam Questions8. Human Nutrition8.1 Diet

Diet (Cambridge O Level Biology)

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8.1 Diet

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8.1 Diet

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Which of the following best describes the function of vitamin D in a human?

  • Vitamin D forms an essential part of collagen protein which is the main component of skin, hair and nails.

  • Vitamin D is needed for strong bones and teeth and a deficiency may lead to osteoporosis later in life.

  • Vitamin D assists with the absorption of calcium and is therefore needed to build strong bones and teeth.

  • Vitamin D is an important component of haemoglobin which is needed for the transport of oxygen to the cells.

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21 mark

Which foods can be eaten to prevent scurvy, anaemia and rickets?

  prevent scurvy prevent anaemia prevent rickets
A cheese and milk  oranges and lemons red meat
B cheese and milk  red meat oranges and lemons
C oranges and lemons cheese and milk  red meat
D oranges and lemons red meat cheese and milk 

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    Which of the following is a correct cause and effect?

      deficiency cause effect
    A iron diet deficient in red meat, leafy green vegetables and liver brittle bones (rickets)
    B iron lack of sunlight, fish and eggs anaemia - tiredness and weakness due to not enough oxygen being delivered to tissues
    C vitamin D lack of sunlight brittle bones (rickets)
    D vitamin D diet deficient in red meat, leafy green vegetables and liver anaemia - tiredness and weakness due to not enough oxygen being delivered to tissues

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      21 mark

      Which statement about diets is correct? 

      • A diet providing all the needs of an average man aged 70 can lead to malnutrition in an active boy aged 14.

      • Malnutrition can only occur if the body receives less of a nutrient than it requires.

      • Protein requirements in the diet increase throughout a person’s life.

      • Very young children require a greater total energy intake than active adults. 

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