Protein Structure

Question 1

Primary Structure

Answer 1

Linear sequence of amino acids, joined by peptide bonds created through condensation polymerisation reactions
Determined by genetic code

Question 2

Secondary Structure

Answer 2

Formed through hydrogen bonding between amino acids

Hydrogen bonding causes coiling and folding that create alpha helices, beta pleated sheets and random coils

Question 3

Tertiary Structure

Answer 3

Formed due to bonding between amino acid R groups

Refers to the 3D folded shape of a protein

Biologically functional

Question 4

Quaternary Structure

Answer 4

Formed due to multiple polypeptide chains interacting to form a single functioning protein