Answer
If there were no mechanisms for modulation acetyl-CoA levels, then the citric acid cycle would be continued by the cell, which would lead to the wasteful overproduction of ATP and cause an offset in concentrations of biomolecules within the cell.
Work Step by Step
If there were no mechanisms for modulation acetyl-CoA levels, then the citric acid cycle would be continued by the cell, which would lead to the wasteful overproduction of ATP and cause an offset in concentrations of biomolecules within the cell.