Enzyme help?

Question

Phosphofructokinase is an allosteric enzyme that catalyzes the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate, an early step of glycolysis. In the presence of oxygen, an increase in the amount ATP in a cell would be expected to

activate the enzyme and increase the rates of glycolysis and the citric acid cycle.

inhibit the enzyme and thus slow the rates of glycolysis and the citric acid cycle.

activate the enzyme and thus slow the rates of glycolysis and the citric acid cycle.

inhibit the enzyme and thus increase the rate of glycolysis and the concentration of citrate.

inhibit the enzyme and thus increase the rates of glycolysis and the citric acid cycle.

Answer 1

inhibit the ensyme, and slow the rate - if there's enough ATP there is no reason of creating more by the glycolisis.