Leaving Certificate Agricultural Science. Food & Nutrition. The Functions of Food. Food supplies the animal with energy for all animal activities. To provide the materials for growth and repair of cells To provide materials for production of hormones and enzymes.
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Food & Nutrition
Benedicts or Fehlings solution is added to the food sample (dissolved if necessary) and placed in a water bath.
A brick red colour is a positive result.
Iodine solution is used to test for starch
A blue / black
colour is a positive result.