C3 Food Matters

Nitrogen Cycle

• Nitrates in the sil are absorbed by the plants and are also put back into the atmosphere by denitrifying bacteria.
• The plants decompose into ammonium compunds, and animals eat the plants and either poo or decompose into ammonium compounds. Nitrifying bacteria turns ammonium compounds back into nitrates in the soil.
• Nitrogen fixing bacteria are found in the soil and the roots of the plants.
• Lightning can also put nitrogen in the soil.
• Taking plants out of the ground removes that nitrogen from the cycle.

Organic Farming

• Fertilisers:
  • Crop Rotation
  • Animal Manure
  • Animal Bodies
  • Plant Bodies
  • Compost
• Pest Control:
  • Natural Predators
  • crop rotation
  • grassy edges of fields
  • natural pesticides

Intensive Farming

• Fertilisers:
  • Chemicals
  • Pellets
  • Sprays
• Pesticides:
  • Chemicals
    • Could leave residues on food

Natural Polymers

• Carbohydrates
  • Glucose is the monomer.
  • Cellulose and Starch are the polymers.
  • Used for respiration and photosynthesis.
  • Made of Carbon, Hydrogen and Oxygen.
  • Bread, potatoes and muesli
• Proteins
  • Monomers are amino acids.
  • Made of carbon, hydrogen, oxygen and nitrogen.
  • Meat, eggs and fish.
  • Builds skin, hair,muscles and mostly tendons.
  • Excess amino acids are taken to the liver to be broken down into urea and then to the kidneys where the urea is removed and passed out as urine.

Diabetes

• Type 1
  • Develops in young people.
  • The body can't produce insulin…