AQA GCSE Food preparation and nutrition - (1.1.1) - Protien

Question 1

Is protein a macro or a micro nutrient?

Answer 1

Macronutrient

Question 2

What is meant by an amino acid?

Answer 2

Amino acids make up protein molecules; when protein is digested the body breaks it up into individual amino acids

Question 3

Define “essential amino acids”

Answer 3

Amino acids that cannot be made naturally by the body

Question 4

Define a high biological value (HBV) food

Answer 4

A food that contains all essential amino acids

Question 5

Define a low biological value (LBV) food

Answer 5

A food that is missing 1 or more of the essential amino acids

Question 6

EXAM STYLE QUESTION: Describe 2 functions of protein (2 marks)

Answer 6

(1 mark) Growth and repair
(1 mark) Secondary energy source (30%)

Question 7

What is the role of hormones in the body?

Answer 7

Growth and reproduction

Question 8

What is the role of enzymes in the body?

Answer 8

Digestion of food

Question 9

What is the role of anti-bodies in the body?

Answer 9

to help your immune system fight infections from bacteria and viruses

Question 10

Name 3 sources of HBV proteins.

Answer 10

Red meats, eggs, dairy foods, quinoa, soya beans, fish

Question 11

Name 3 sources of LBV proteins.

Answer 11

Nuts, seeds, cereals, beans, lentils, sorghum, gelatine

Question 12

EXAM STYLE QUESTION: List 3 effects of a protein deficiency in the body (3 marks)

Answer 12

Children will not grow properly (1), Hair loss (1), Poor skin and nail conditions (1), Easier development of infections (1), unable to digest food (1)

Question 13

Name 3 alternative sources of protein.

Answer 13

Tofu, Tempeh, TVP (textured vegetable protein), mycoprotein

Question 14

Explain the effects of a protein excess in the body.

Answer 14

Protein contains nitrogen which needs to be removed from the body via urine. If there is an excess of nitrogen this puts stress on the kidneys leading to conditions like kidney failure