intermediate 1 unit 3c fats, proteins, vitamins 123 4567 89 10 111213 14 15 22 23242526 161718192021...

Intermediate 1 Unit 3c

Fats, Proteins, Vitamins

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What do fats and oils provide our body with?

Energy - more than carbohydrates

Describe how to test a food for fat/oil.

A greasy mark on

filter paper

Which type of fat is thought to increase the cholesterol level in

the blood stream?

Saturates

Which type of fat is considered to be less harmful to the heart?

Polyunsaturates

What health problem is caused by too much fat in the diet?

Heart disease

Name the three elements present in a fat/oil.

Carbon, hydrogen and oxygen

Why are proteins needed in our diet?

Growth and repair

Name the elements present in a protein.

Carbon, hydrogen, oxygen and nitrogen

How can proteins be detected?

Heat with soda lime and test for an alkaline gas with

damp pH paper (turns blue)

Name the type of monomers which join together to make a protein.

Amino acids

What size of molecules arefound in a protein?

Large polymers

What happens to protein molecules during digestion?

They are broken down into amino acids

What part of the body does fibre help to keep working?

Gut

What does fibre help to prevent?

Constipation

What does fibre absorb in the gut?

Water

What do the gut muscles do?

Squeeze food along

Why are vitamins needed?

To keep the body healthy

What can happen in there is a lack of vitamins in your diet?

It can cause poor health

Give a reason why food additives are added to food.

To make the food last longer.

To change the appearance of the food.

To change the flavour of the food.

To supply vitamins and minerals.

Name the type of food additive which makes the food

keep longer.

Preservative

How can a food additive change the appearance of food?

Change its colour

What must happen to a food additive before it can be used in the

food industry?

It must be tested and approved.

Which of the 4 key elements needed by a healthy body is supplied only be proteins?

Nitrogen

What are fats/oils obtained from ?

Plants and animals

What are proteins obtained from?

Plants and animals

Why must a vegetarian diet contain a wide range of vegetables?

To supply all the necessary amino acids

What type of substance breaks down proteins during digestion?

Enzymes

Intermediate 1 Unit 3c

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