Proteins and enzymes 2 (2)

Question 1

Primary structure

Answer 1

Primary structure is the unique sequence of amino acids that make up a protein

Question 2

Secondary structure

Answer 2

Secondary structure is when H bonds form in poly peptide chains and twists it into an alpha helix shape or a beta pleated sheet

Question 3

Tertiary structure

Answer 3

Tertiary structure is when coiled shape of protein coils further and disulphides, ionic and hydrogen bonds form between R groups. Also, hydrophobic and hydrophilic interactions take place which is when hydrophilic R groups fold to inside and hydrophobic R groups fold to their outside.

Question 4

Quaternary structure

Answer 4

Quaternary structure is the way many different polypeptide chains are held together

Question 5

How can primary structure enable a protein to be soluble in water

Answer 5

Primary structure can enable a protein to be soluble in water by:
Primary structure determines folding of polypeptide
Forming a globular structure
Hydrophilic R groups located on outside
Water forms H bonds with hydrophilic R groups