Food

Question 1

What is our food made of?

Answer 1

1.Carbohydrates 2.Fats 3.Protein 4.Vitamins 5.Minerals 6.Water

Question 2

Starch and sugars

Answer 2

•These provide us with energy.

Question 3

Fibre (Roughage)

Answer 3

•Passes through the digestive system to make sure it is on good working order and avoid constipation

Question 4

Why do we need food

Answer 4

•To give us energy •To protect against disease •To keep us warm •For growth •For repair of body cells

Question 5

Starch

Answer 5

In potatoes,bread,pasta,rice

Question 6

Sugar

Answer 6

In sugar,jam,honey,fruit

Question 7

Fibre

Answer 7

In bran and vegetables

Question 8

We use iodine to test for

Answer 8

Starch,

Question 9

Iodine turns blue/black

Answer 9

In the presence of starch

Question 10

We need fats in our diet because:

Answer 10

1. To store energy in body. 2.The layer of fat just under the skin gives our body insulation.

Question 11

Sources of fat:

Answer 11

Milk,fatty meat, dairy products e.g cheese

Question 12

We test for fat by using

Answer 12

Brown paper

Question 13

Why do we need proteins in our food:

Answer 13

1.They are the main source of material that our cells need to grow. 2.Proteins are needed for growth and repair.

Question 14

Sources of protein:

Answer 14

Milk, lean meat, fish, eggs, nuts.

Question 15

We test for protein using:

Answer 15

The biuret test (using copper sulphate and sodium hydroxide )

Question 16

Using the biuret test, the chemicals turn from

Answer 16

Blue to violet in the presence of protein

Question 17

Glucose

Answer 17

Is a reducing sugar

Question 18

Glucose is tested for by adding

Answer 18

Benedict’s solution and heating. It turns from blue

Question 20

Carbohydrate

Answer 20

•Starches and sugars, or roughage