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Question 1

What does a balanced diet contain

Answer 1

Proteins, carbohydrates, vitamins, minerals, fibre and water

Question 2

What is the main source of energy

Answer 2

Carbohydrate

Question 3

Are sugars such as glucose soluble or insoluble

Answer 3

Soluble

Question 4

Are sugars such as starch soluble or insoluble

Answer 4

Insoluble

Question 5

Name sources of carbohydrates in the diet

Answer 5

Potatoes, rice, pasta, bread and sugary snacks

Question 6

What are proteins made up of

Answer 6

Many subunits called amino acids

Question 7

What are proteins used for

Answer 7

Repair and growth

Question 8

Sources of protein

Answer 8

Meat, egg, fish and nuts

Question 9

What are fats used as

Answer 9

A store for energy

Question 10

What does the layer under the skin help do

Answer 10

Insulate the body

Question 11

What molecules do fats consist of

Answer 11

A molecule of glycerol joined to 3 fatty acids

Question 12

Fats and oils together are called

Answer 12

Lipids

Question 13

Sources of fats in the diet

Answer 13

Meat and vegetable oils

Question 14

All 3 main foodstuffs are compounds made from the elements

Answer 14

Carbon, hydrogen, oxygen. In addition, proteins contain nitrogen

Question 15

What is mostly made from cellulose in plants

Answer 15

Fibre

Question 16

Chemical test with iodine

Answer 16

Changes from brown to blue-black when added to starch

Question 17

Chemical test with Benedict’s reagent

Answer 17

Changes from blue to brick-red when heated with a reducing sugar eg glucose

Question 18

Chemical test with Biurets reagent

Answer 18

Changes from blue to lilac in the presence of proteins

Question 19

Rubbing a source of fat onto paper will leave a

Answer 19

Translucent mark