Figure a Shows a Protein Consisting of Two Identical Subunits

Multiple Choice

Figure A shows a protein consisting of two identical subunits.Figure B shows the same protein after each subunit has been covalently modified with a phosphate group. Based on the activities shown in the diagrams, what biological advantage does this protein gain by having the ability to undergo a reversible phosphorylation-dephosphorylation reaction?

A) It gains the ability to resist denaturation.
B) It gains the ability to undergo reversible subunit dissociation.
C) It gains a mechanism for regulating substrate binding.
D) It gains a broader range of molecules that will bind to its binding sites.
E) It gains a broader range of biological functions that it can carry out.