Question

Hydrophobic interactions help to stabilize the ________ structure(s) of a protein.

a. primary
b. secondary
c. secondary and tertiary
d. tertiary and quaternary
e. secondary and quaternary

Answer 1

Answer:

d. tertiary and quaternary

Explanation:

Form or shape of protein can be understood by its structure. The structure of protein encompasses four levels of protein :

• Primary (Simplest layer of amino acids in polypeptide chain),
• Secondary (Atom - Backbone folding structure within polypeptide),
• Tertiary (R groups of amino acids),
• Quaternary (multiple polypeptide chain subunits).

Hydrophobic Interactions refers to amino acids with non polar r group structure together on inside of protein, which leaves Hydrophobic amino acids outside to interact with surrounding water molecules.

These help to stabilise : D) Tertiary & Quaternary protein structures.