1
Q
What are the monomers of protein called?
A
Amino Acids
2
Q
What is formed when 2 amino acids join together?
A
A Dipeptide
3
Q
What is formed when MORE than 2 amino acids join together ?
A
A Polypeptide
4
Q
What makes up an amino acid?
A
- A Carboxyl group (COOH)
- An Amino group
- R group
5
Q
What is special about the R group?
A
It is always different in each amino acid
6
Q
What reaction joins amino acids together?
A
Condensation Reaction
7
Q
What type of BOND is formed between amino acids?
A
Peptide bonds
8
Q
How are dipeptides and polypeptides broken down?
A
Through a hydrolysis reaction
9
Q
What are the 4 types of protein structures?
A
- Primary Structure
- Secondary Structure
- Tertiary Structure
- Quaternary Structure
10
Q
What is the test for Proteins called?
A
The Biuret test
11
Q
How is the Biuret test carried out?
A
- Solution NEEDS to be ALKALINE
- about 5-10 Drops of sodium hydroxide solution are added (Without being shaken)
- Then 5-10 drops of copper sulfate solution is added
12
Q
How do we know that the Biuret test turned out positive?
A
If parts of the solution turn purple (this shows a protein is present)
Biology (Mr James)
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