Food and diet

• What regent used to test for starch?

  iodine
• What reagent used to test for sugars?

  Benedicts
• What reagents used to test for protein?


  Biuret
• What reagent used to test for fat?

  Ethanol
• What colour change if theres positive test for starch?

  Yellow brown to blue black
• What colour change if positive test for reducing sugars?

  blue to brick red
• What colour change if positive test for protein?

  Blue to purple
• What colour change if positive test for fat?

  Colourless to white emulsion
• Which food test must be heated?

  benedict - heated in water bath
• what function of carbohydrates?

  Provides enrgy
• 3 eg of simple carbohydrates?

  Sugar, glucose, lactose
• 3 eg of complex carbohydrates?

  cellulose, starch, glycogen
• Which carbohydrate Is found in milk?

  Lactose
• Which Carbohydrate is a storage carbohydrate in animals?

  Glycogen
• function of fat?

  Energy store
• Another name for fats?

  Lipids
• What are fats made up from?

  Fatty acids and glycerol
• Function of protein?

  Growth and repair
• what are proteins made up from?

  Amino acids