1. PROTEIN

2. Terms that we need to know!
Composition
What something is made up of.
Protein

3. Terms that we need to know
Function
Function is the role,
job, duty or activity that it has.

4. Terms that we need to know!
Classification
The way some things are grouped
What group do proteins go into?

5. Terms that we need to know
Source
Where can you find the nutrient in food

6. Proteins, where are they?

7. Protein is found in every cell, muscle and tissue in our body, and is also present in many foods we eat!
The protein in our body is the same as the protein in our food except that it is structurally different.

8. What is protein?
Protein: Is one of the six nutrients, which is necessary for the manufacture and growth of all body cells.

9. What is the elemental Composition of protein?
Protein is made up of
Carbon
Hydrogen
Oxygen
Nitrogen

10. Each protein is made up of smaller units called amino acids.

11. Amino ACIDS ARE THE BUILDING BLOCKS OF PROTEIN
Proteins are what put us together, they help us grow 
ARE THE BUILDING BLOCKS OF PROTEIN

12. There are 20 amino acids.

13. These can be divided into two categories Essential and Non- Essential.
Cannot be manufactured in the body, must be obtained by food.
Can be manufactured by the body and don’t need to be obtained by food.

14. Essential Amino Acids:
L: Leucine
I: Isoleucine
L: Lysine
T: Tryptophan

15. Non Essential amino acids:
Glycine
Cysteine

16. Recommended daily allowance
RDA: Recommended daily allowance
1g per kg of body weight

17. Portion size of protein
60g cooked lean meat and poultry
90 – 120g cooked fish
2 eggs
3 tablespoons cooked peas
30g nuts

18. The energy value of protein
The primary function of protein is growth and repair. Any excess protein is used for energy.

19. The biological value of protein
High biological
Low biological

20. Classification of protein
HBV: Contains all the essential amino acids and mostly obtained by animal sources.
Sometimes called complete proteins.

21. Low biological proteins are lacking in one or more of the essential amino acids.
These are also known as incomplete proteins.