Which statement is false about a globular protein that performs its biological function as a single independent polypeptide chain?
A) Its tertiary structure is likely stabilized by the interactions of amino acid side chains in non-neighboring regions of the polypeptide chain.
B) It could contain α-helices that are stabilized by hydrogen bonding.
C) It likely has extensive quaternary structure to maintain its globular shape.
D) Non-covalent forces are the primary source of stability for the secondary and tertiary structure.

C) It likely has extensive quaternary structure to maintain its globular shape

Explanation:

Quaternary structure exists for proteins that have more than on polypeptide chain such as hemoglobin (four polypeptide chain).

The protein in the statement has one polypeptide chain that why it cannot have extensive quaternary structure to maintain its globular shape.

Interactions like hydrogen bonding and london dispersion forces hold the subunits together in quaternary structure.

answer; /// i do believe the correct answer is (

you click your profile picture in the top right corner and it says edit profile.