2. National 5 Cell Biology
Proteins

3. We are learning to:
State that proteins are made of a chain of amino acids
State that the order of amino acids determines the function of a protein
Give examples of functions of proteins

4. What I'm looking for: Description of the structure of a protein
Table showing functions and examples of proteins

5. What are proteins?
Proteins are made of long chains of small molecules called amino acids.
protein
molecule
one
amino acid
There are over 20 different kinds of amino acid.
Proteins are used by the body for growth and repair.

6. Functions of Proteins Watch the video
Listen closely for the different functions of a protein
Complete the card sort in your group
Fill out the table in your booklet

7. Functions of Proteins Protein Function Haemoglobin
Produced by white blood cells and protect body from harmful microbes
Chemical messengers
Carry oxygen around the body
Antibodies
Hormones
e.g. insulin, testosterone, oestrogen, adrenaline

8. Speed up chemical reactions
Protein
Function
Speed up chemical reactions
Transport
Structural
Enzymes
e.g. amylase, catalase, phosphorylase
Movement of molecules
e.g. membrane proteins
Provide shape and support
e.g. collagen, keratin, actin and myosin

9. I can: State that proteins are made of a chain of amino acids
State that the order of amino acids determines the function of a protein
Give examples of functions of proteins