food tests

• What is the use of carbohydrates in the body?

  energy resource for respiration
• What is carbohydrates broken down into?

  sugars
• What do we use to test for starch?

  iodine
• What is the colour change for starch using iodine?

  orange to blue/black
• What do we use to test for sugars?

  benedicts solution
• What is the colour change in the test for sugars using benedicts?

  blue to green, yellow or red (going up in concentration)
• What is protein used for in the body?

  growth, repair, enzymes and antibodies
• What are proteins broken down into?

  amino acids
• What is the test for proteins?

  biuret test
• What is the colour change for the test for proteins?

  blue to pinky purple
• What use does lipids have in the body?

  cell membranes, hormones and the nervous system
• What are lipids broken down into?

  glycerol and fatty acids
• What is the test for lipids?

  ethanol and water
• What is the positive test for lipids?

  goes cloudy