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Food and Nutrition (JC Science)

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  • What is a balanced diet?
    A diet which contains all the nutrients in the correct quantities.
  • Why do we need food?
    Energy, Prevent and Fight disease, Growth of the body, Repair of tissues
  • What reagent is used to test for the presence of protein?
    Biuret Solution
  • What is the largest shelf on the food pyramid?
    Fruits and Vegetables
  • What is the function of fat?
    Provide heat and energy. Insulate delicate organs.
  • A deficiency of what vitamin results in scurvy?
    Vitamin C
  • What type of foods should we limit where possible?
    Foods high in sugar, salt and fats
  • What does the food pyrmaid tell us?
    How to achieve a balanced diet. The correct quantitites of each food to consume daily.
  • What colour will iodine turn if starch is present?
    Blue/Black
  • List some sources of carbohydrates.
    Breads, pasta, rice, potatoes
  • What is calcium important for?
    Strong bones and teeth
  • What reagent is used to test for sugars (Glucose)?
    Benedicts solution
  • What colour change shows a positive result for glucose?
    Blue to brick red
  • What is the function of protein?
    Growth, Repair of tissues
  • What is a negaitve result when testing for the presence of fat?
    The brown paper has no stain.
  • What is the function of starch?
    Energy
  • How often should we consume milk yoghurts and cheeses?
    3 times a day.
  • What reagent is used to test for the presence of starch?
    Iodine
  • What colour change shows a positive result for protein?
    Blue to purple
  • What is a positive result for fat?
    The brown paper had a grease stain.
  • What does it mean if Iodine stays brown/red?
    Starch is not present
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