Biology - Food Flashcards

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1
Q

What is a balanced diet?

A

A balanced diet consists of the right amounts of food

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2
Q

What foods are needed for a balanced diet?

A

Carbohydrates, Fats, Proteins, Vitamins, Minerals and Water

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3
Q

What do carbohydrates do?

A

They give energy

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4
Q

Give three types of carbohydrates and examples

A

Sugar, found in jam and honey for a quick release of energy
Starch, found in potatoes, rice and bread for a slow release of energy
Fibre, found in bran and vegetables and it prevents constipation

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5
Q

What do fats do?

A

They store energy

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6
Q

What are fats needed for?

A

They are needed to insulate the body

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7
Q

Give two sources of fats

A

Butter, Cream, Milk and Oils

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8
Q

What is protein needed for?

A

It is needed to make muscles and hair and to repair body parts

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9
Q

Give two sources of protein

A

Meat, Fish, Eggs, Milk and Nuts

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10
Q

What is vitamin C needed for?

A

It’s needed to keep skin and gums healthy

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11
Q

Give a source of vitamin C

A

Oranges (Citrus fruits)

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12
Q

What is vitamin D needed for?

A

It’s needed to form strong bones and teeth

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13
Q

Give a source of Vitamin D

A

Milk and Butter

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14
Q

What is iron?

A

It forms red blood cells

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15
Q

Where can you find iron?

A

In red meat

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16
Q

What is calcium needed for?

A

Calcium is needed to form strong bones and teeth

17
Q

Give a source of calcium

A

Milk and Cheese

18
Q

What are the two functions of water?

A

It transports substances around the body and allows chemical reactions to take place

19
Q

What is the food pyramid?

A

It shows how much of each food type is needed for a healthy diet

20
Q

What is energy measured in?

A

Kilojoules (Kj/g)

21
Q

What is food?

A

Food is needed for growth, energy, repair and to prevent diseases [gerp]

22
Q

To test food for starch [experiment]

A

1- Add a few drops of Iodine solution to some food [potatoes, bread, water]
2- Observe any changes in colour
Result- Iodine runs black in the presence of starch [bread, potatoes]
Iodine does not turn black in water
Conclusion - iodine is the test for starch