Proteins

• Proteins make up around 18% of body mass (Which is the 2nd largest % after water)
• What are proteins use for?

  Growth and repair and making enzymes and hormones
• What are proteins?

  Large molecules made up of smaller units called amino acids
• There are 20 amino acids that make up every protein in every organism
• The order of the amino acids decides the larger protein
• What is the test for proteins?

  The Biuret test
• What is the Buiret test?

  1. Take a 2ml sample of food
  2. Add 2ml of Biuret solution
  3. If protein is present it will change from Blue to Purple