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Food 01
Cucumbers contain little or no carbohydrates.

Food 01

This KS3 Science quiz takes a look at food. Plants are able to make their own food through the process of photosynthesis but animals, including humans, need to eat. Once food is inside the body of an animal, it is digested in order to release the nutrients. The nutrients can be grouped together - carbohydrates, proteins, fats, fibre, vitamins and minerals. A balanced diet is essential to good health. Eating a balanced diet means that you eat a wide variety of different foods that give you all of the nutrients you need in the correct quantities. The way we live nowadays tends to provide us with more fats and carbohydrates than are needed.

Carbohydrates and fats supply the body with calories that provide our cells with the energy they need to work. Any excess calories are stored in the body in special cells just beneath the skin. Proteins are required to help our bodies grow and repair damage. Fibre is required to help with digestion. Vitamins and minerals are required only in small quantities but are essential to many of the chemical reactions that occur in our bodies. Without them, we are less resistant to disease, have less energy and can suffer permanent damage to our nervous system.

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1.
Which of the following foods contain little or no carbohydrates?
Bread
Cucumber
Pasta
Potatoes
A cucumber is a good source of vitamins and minerals
2.
Which of the following foods contain little or no protein?
Beans
Butter
Fish
Meat
Butter contains mainly fat
3.
Which of the following foods contain little or no fibre?
Apples
Carrots
Cheese
Peas
Fresh fruit and vegetables contain vitamins and fibre
4.
What are carbohydrates used for?
Cell chemistry
Energy
Growth and repair
Healthy blood
They provide energy through respiration
5.
What are fats used for?
Cell chemistry
Growth and repair
Healthy blood
Stored energy
As well as stored energy, they provide insulation
6.
Which of the following contains most calcium?
Cheese
Green vegetables
Meat
Oranges
Milk-based products are a good source of calcium
7.
Fibre is needed for what?
Cell chemistry
Energy
Healthy blood
Preventing constipation
It also helps prevent bowel cancer
8.
What are proteins used for?
Cell chemistry
Energy
Growth and repair
Healthy blood
Proteins are long chains of different amino acids
9.
What are small amounts of vitamins needed for?
Bones and teeth
Cell chemistry
Digestion
Respiration
If your cell chemistry doesn't work properly all sorts of things can start to go wrong with your body
10.
Iron, a mineral, is needed for what?
Bones and teeth
Cell chemistry
Energy
Healthy blood
Calcium, also a mineral, is needed for bones and teeth
Author:  Sue Davison

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