food groups

• In today's video we're looking at the different biological molecules or nutrients that you need for a healthy balanced diet
• Biological molecules/nutrients covered


  • Carbohydrates
  • Lipids
  • Proteins
  • Vitamins
  • Mineral ions
  • Fiber
  • Water
• Foods normally have a mix of different nutrients in them, not just one
• Carbohydrates


  Found most in starchy foods like bread, pasta and potatoes, as well as in fruits and vegetables. Main role is as an energy source.
• Lipids


  Fats and oils. Found in oily fish, nuts, seeds, dairy and avocados. Main role is to provide energy and insulate/protect organs.
• Proteins


  Found in nuts, seeds, meat, fish, legumes. Needed for growth and repair of tissues.
• Vitamins


  Organic molecules made by living organisms. Needed in small amounts for various functions.
• Mineral ions


  Inorganic, simple molecules. Needed in small amounts for various functions.
• Fiber


  Type of carbohydrate not absorbed. Found in wholemeal foods, fruits and vegetables. Helps food move through intestines.
• Water


  Needed for chemical reactions, makes up 70% of body. Obtained from drinks and water-rich foods.
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