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18 Cards in this Set
- Front
- Back
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Why is... CARBOHYDRATES needed? |
To give us energy. |
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Why is... PROTEIN needed? |
For growth and repair (building new substances) |
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Why is... VITAMINS needed? |
For general health |
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Why is... MINERALS needed? |
For general health. |
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Why is... FIBRE needed? |
For health and helps to stop constipation. |
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Why is... WATER needed? |
For health (water dissolves substances and fills up cells.) |
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Give good sources of... CARBOHYDRATES. |
Pasta, bread, rice, potatoes |
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Give good sources of... PROTEIN. |
Meat, fish, beans. |
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Give good sources of... VITAMINS |
Fruits and vegetables (e.g. oranges contain lots of vitamin C) |
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Give good sources of... MINERALS |
Fruits vegetables and dairy products (e.g. milk contains calcium.) |
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Give good sources of... FIBRE |
Wholemeal bread, wholegrain rice, celery, and other fibrous vegetables. |
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Give good sources of... WATER |
Water, of course. |
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Give an example of a food test. You must include its full name, what its for and other details like colour change or scent. |
Benedicts test- testing for glucose/sugar. Colour changes from blue to a brick red if sugar is present. Iodine test - testing for starch. Colour changes from orange to blue/black if starch is present. Biuret test- testing for protein. Colour changes from blue to mauve if protein is present Emulsion test- testing for fats and oils. A white emulsion indicates fatty presence. |
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Nutrition information labels on food tells us what the food contains. The label also tells us how much energy is stored in the substances that make up the food. The amount of energy is measured in kilojoules (kj). The amount of energy a peson needs in a day depends on: Describe the 3 points that helps you deside the amount of energy you need in a day. |
-levels of activity (more active people need more energy) -age (teenagers need more energy from food than adults do) -whether the person is a boy or a girl (boys need more energy than girls.) |
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What happens if you become obese? |
Too much fat may cause heart disease and can make people over weight. Very overweight people are called obese. |
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What does digestion do? |
Digestion turns large insoluble pieces into small soluble ones. |
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What helps us digest our foods? Write what it is and list as many as you can. |
The digestive system: Mouth Saliva Gullet Stomach Small intestine Large intestine Rectum Anus |
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What covers the wall of the small intestine? |
Villi |
