science differentiation in action carbohydrates sugarfibre a balanced diet contains all the food...
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Science Differentiation in action
carbohydrates
sugar fibre
A balanced diet contains all the food types in the right amounts to stay healthy.
starch
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Science Differentiation in action
FoodFood
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Science Differentiation in action
Forenergy
Forenergy
Preventsconstipation
carbohydrates
sugar starch fibre
A balanced diet contains all the food types in the right amounts to stay healthy.
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Science Differentiation in action
Forenergy and insulation
fats
A balanced diet contains all the food types in the right amounts to stay healthy.
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Science Differentiation in action
proteins
A balanced diet contains all the food types in the right amounts to stay healthy.
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Science Differentiation in action
A balanced diet contains all the food types in the right amounts to stay healthy.
proteins
For growthand repair
of cells
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Science Differentiation in action
vitamin C vitamin 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
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Science Differentiation in action
To make redblood cells
For strong bones
minerals
A balanced diet contains all the food types in the right amounts to stay healthy.
Iron Calcium
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Science Differentiation in action
water
A balanced diet contains all the food types in the right amounts to stay healthy.
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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
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Science Differentiation in action
Oil and Sugar
Meat, Fish, NutsMilk, 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?
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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
For energy
Prevents constipation
For growth and repair of cells
For energy and insulation
For healthy skin/gums
For strong bones
For strong bones
To make red blood cells
To dissolve and transport substances
Review Question
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Science Differentiation in action
To Test for Protein (Biuret Test)To Test for Protein (Biuret Test)
Method:Method:
1)Dissolve a sample of protein (milk) in water.
2)Add a few drops of sodium hydroxide (colourless)
3)Add a few drops of copper sulfate (blueblue)
Sample of milkSample of milk
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Science Differentiation in action
ResultsResults
If protein is present, the colour will change from blue If protein is present, the colour will change from blue to purple.to purple.
What does it mean if the colour remains blue?What does it mean if the colour remains blue?
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Science Differentiation in action
Food tested Chemicals used
Original colour Colour if food present
Glucose (reducing
sugar)
Fats
Protein
Starch
Revision of the Food TestsRevision of the Food Tests
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Science Differentiation in action
Food tested Chemicals used
Original colour Colour if food present
Glucose (reducing
sugar)
Benedicts solutions
Blue Brick red
Fats Brown Paper No stain Stain
Protein Copper sulfate Hydrogen peroxide
Blue Purple
Starch Iodine Brown/yellow Blue/Black
Revision of the Food TestsRevision of the Food Tests