1. Science Differentiation in action carbohydrates sugarfibre A balanced diet contains all the food types in the right amounts to stay healthy. starch

2. Science Differentiation in action Food

3. For energy Prevents constipation carbohydrates sugarstarchfibre A balanced diet contains all the food types in the right amounts to stay healthy.

4. Science Differentiation in action For energy and insulation fats A balanced diet contains all the food types in the right amounts to stay healthy.

5. Science Differentiation in action proteins A balanced diet contains all the food types in the right amounts to stay healthy.

6. Science Differentiation in action A balanced diet contains all the food types in the right amounts to stay healthy. proteins For growth and repair of cells

7. Science Differentiation in action vitamin Cvitamin D vitamins A balanced diet contains all the food types in the right amounts to stay healthy. For healthy skin and gums For strong bones

8. Science Differentiation in action To make red blood cells For strong bones minerals A balanced diet contains all the food types in the right amounts to stay healthy. IronCalcium

9. Science Differentiation in action water A balanced diet contains all the food types in the right amounts to stay healthy.

10. Science Differentiation in action water A balanced diet contains all the food types in the right amounts to stay healthy. Used to make blood and to dissolve and transport substances

11. Science Differentiation in action Oil and Sugar Meat, Fish, Nuts Milk, Cheese, Yogurt Fruit and Vegetables Bread, Potatoes, Pasta We can use the Food Pyramid. How do we know how much of each food type to eat?

12. Science Differentiation in action What is the function of each food type in the table? Carbohydrates(i)Sugar (ii)Starch (iii)Fibre Protein Fat Vitamins(i)Vitamin C (ii)Vitamin D Minerals(i)Calcium (ii)Iron Water For energy Prevents constipation For growth and repair of cells For energy and insulation For healthy skin/gums For strong bones To make red blood cells To dissolve and transport substances Review Question

13. Science Differentiation in action To Test for Protein (Biuret Test) Method: 1)Dissolve a sample of protein (milk) in water. 2)Add a few drops of sodium hydroxide (colourless) blue 3)Add a few drops of copper sulfate (blue) Sample of milk

14. Science Differentiation in action Results If protein is present, the colour will change from blue to purple. What does it mean if the colour remains blue?

15. Science Differentiation in action Food testedChemicals usedOriginal colourColour if food present Glucose (reducing sugar) Fats Protein Starch Revision of the Food Tests

16. Science Differentiation in action Food testedChemicals usedOriginal colourColour if food present Glucose (reducing sugar) Benedicts solutionsBlueBrick red FatsBrown Paper No stain Stain Protein Copper sulfate Hydrogen peroxide Blue Purple Starch Iodine Brown/yellow Blue/Black Revision of the Food Tests