Protein

Question 1

Composition of protein

Answer 1

4 elements: carbon, hydrogen, oxygen and nitrogen (CHON)
Nitrogen is the responsible for growth
These elements make up unitd called amino acids joined together with peptide links to form chains

Question 2

Classification of proteins

Answer 2

1. High biological value(HBV)
2. Low biological value(LBV)

Question 3

Sources of protein

Answer 3

Animal protein (HBV): Meat, fish, eggs, milk, cheese and yoghurt
Vegetable protein (LBV): Peas, beans, lentils, nuts and cereals

Question 4

Advantages of plant foods as a source of protein

Answer 4

Less fat( not saturated fat)
More cellulose
Cheaper to produce
Less land is required

Question 5

Functions of protein

Answer 5

Growth and repair
Production of hormones, enzymes and antibodies