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46 Cards in this Set
- Front
- Back
Why is food needed? |
Source of energy growth material for the body |
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Food is made up of |
Chemicals called Nutrients |
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What are the 5 nutrients? |
Carbohydrate, fats, vitamins, minerals & proteins |
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What is a balanced diet? |
Diet that consists of: The correct amount of each nutrient + water |
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Examples of carbohydates |
Sugar Starch Cellulose (fibre) |
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Function of sugar |
To provide energy |
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Function of starch |
To provide energy |
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Cellulose (fibre) |
Helps prevent constipation |
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Sources of sugar |
Fruit, honey, milk, soft drinks |
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Sources of starch |
Potatoes, pasta, bread |
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Sources of cellulose |
Green vegetables & cereals |
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Functions of protein |
For growth & repair of cells To make muscle & hair |
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Sources of protein |
Lean meat, egg white, soya, nuts, fish |
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Function of fat |
To provide a store of energy For insulation |
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Sources of fat |
Butter, milk, cheese oils |
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Examples of vitamins |
Vitamin C Vitamin D |
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Function of vitamin C |
Healthy skin & gums Lack of vitamin C causes Scurvy |
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Sources of vitamin C |
Citrus fruits |
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Function of vitamin D |
To build strong bones & teeth
Lack of vitamin D causes Rickets |
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Sources of vitamin D |
Cheese, milk, yoghurt |
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Examples of minerals |
Iron (Fe) Calcium |
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Function of iron |
Needed to make red blood cells Lack of iron causes anaemia |
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Sources of iron |
Red meat, liver, cabbage |
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Function of calcium |
Healthy bones & teeth |
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Sources of calcium |
Milk, cheese, tinned salmon |
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Chemical used to test for starch: |
Iodine solution |
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Colour change for starch test |
Brown/yellow ---> blue-black |
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Chemical used to test for glucose |
Benedict's solution (+heat) |
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Colour change for glucose test |
Blue ---> purple |
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Chemical used to test for protein |
Sodium hydroxide + copper sulfate |
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Colour change for protein test |
Blue ---> purple |
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Used to test for fat |
Butter rubbed on brown paper |
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Colour change for fat test |
Translucent spot appears |
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Energy value: |
Amount of energy that can be got from a food (measured in kilojoules) |
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Energy value for fats |
38 kJ / g |
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Energy value for carbohydrates & protein |
17 kJ / g |
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Energy value for vitamins |
0 kJ / g |
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Recommended daily energy requirement for boys age 12-15 |
11, 700 kJ |
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Recommended daily energy requirement for girls age 12-15 |
9, 600 kJ |
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Having a balanced diet depends on: |
Your gender Your age Physical activity |
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If you do not have a balanced diet you many suffer from: |
Malnutrition |
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How many helpings of cereals should we have per day? |
At least six |
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How many helpings of fruit/veg should we have per day? |
3 of each |
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How many helpings of dairy products should we have per day? |
2-3 |
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How many helpings of meat,fish,nuts or eggs should we have per day? |
2-3 |
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How many helpings of fats, oils & sweets should we have per day? |
0-3 |