Proteins

Question 1

What are the monomers of proteins?

Answer 1

Amino acids

Question 2

Groups in an amino acid?

Answer 2

Central carbon atom.
Amino group.
Carboxyl group.
Hydrogen atom.
R group.

Question 3

How many essential amino acids are there?

Answer 3

20

Question 4

How are dipeptides formed?

Answer 4

2 amino acids form in a condensation reaction. Water is removed.
Peptide bond is formed.

Question 5

What is the primary structure of a protein?

Answer 5

Amino acids joined to form a polypeptide chain. Sequence of amino acids gives the protein its shape and function.

Question 6

What is the secondary structure?

Answer 6

Hydrogen bonds form. Weak bonds.
Cause the chain to twist into an alpha helix

Question 7

What is the tertiary structure?

Answer 7

Disulphide bridges.
Ionic bonds.
Hydrogen bonds.
Cause a 3D structure. Important for function

Question 8

What is the quaternary structure?

Answer 8

Large multiple chain proteins. May contain non protein groups.