question: Which of the following is true about effect of insulin and glucagon on gluconeogenesis?
opa: Insulin ours the formation of fructose 2,6 bisphosphate
opb: Fructose 2, 6 bisphosphate is an inhibitor of glycolysis
opc: Insulin acts through a kinase
opd: Glucagon stimulates PFK.2 activity of the tandem enzyme