balanced diet

• 3 of the biological molecules that we need in large quantities:

  • Carbohydrates 
  • lipids
  • proteins
• carbohydrates are needed to:

  • provide energy for chemical reactions
• fats and oils are known as lipids
• lipids are needed to:

  • provide energy for chemical reactions 
  • insulate us and regulate our body temperature
• proteins are needed for:

  • growth and repair of cells
• what vitamin is important for good vision, healthy hair and skin:

  • vitamin A
• which mineral is important for strong bones:

  • calcium
• what disease is caused by a lack of vitamin C:

  • Scurvy
• iron is important in our diets because it is an important component of haemoglobin.

  • A lack of iron can lead to anaemia, which is a condition where enough oxygen cant be transported to our tissues
• fibre is needed to:

  • help food move through our intestines 
• how do you loose water from the body:

  • breathing
  • sweating
  • urinating
• The vitamin that helps us to absorb calcium, and can be made by the body, using sunlight

  • vitamin D
• 3 elements that are found in carbohydrates:

  • Oxygen
  • Carbon
  • Hydrogen
• Carbohydrates are broken down in both the mouth and the small intestine
• glucose is a monomer
• glycogen is a polymer
• proteins are mainly made from:

  • carbon
  • hydrogen
  • oxygen
  • nitrogen