Proteins

Question 1

What are the monomers of Proteins?

Answer 1

Amino acids

Question 2

What is the only difference between each amino acid?

Answer 2

The Variable R group

Question 3

What do proteins contain that carbohydrates and lipids don’t?

Answer 3

Nitrogen

Question 4

What does the R group contain?

Answer 4

Carbon with the exception of glycine which is just one hydrogen atom

Question 5

What bond joins two amino acids?

Answer 5

Peptide bond

Question 6

What is the name of two amino acids joined together?

Answer 6

Dipeptide

Question 7

What is the name of more than two amino acids joined together?

Answer 7

Polypeptide

Question 8

What is the Primary structure?

Answer 8

The number and sequence of amino acids in the polypeptide can determine the 3D shape or tertiary structure. This can effect the shape of the active site in enzymes

Question 9

What is the secondary structure?

Answer 9

Hydrogen bonds form between amino acids which causes the chain to coil into a alpha helix or fold into a beta pleated sheet. Makes the structures stable

Question 10

What is the tertiary structure?

Answer 10

3D shape of polypeptide chain which creates a specific shape due to the sequence of amino acids in the chain. Hydrogen bonds, ionic bonds and disulphide bridges form between R groups. A change to the sequence can affect the secondary or tertiary structure as these bonds would form in different places

Question 11

What is the Quaternary structure?

Answer 11

Proteins made of more than one polypeptide chain are joined together to create quarternary structure