What is the role of insulin in the conversion of glucose into energy by the cells?

1) Insulin promotes glucose uptake by cells by stimulating translocation of the glucose transporter protein, GLUT-4 to the cell surface.

2) Insulin stimulates activity of various key regulatory enzymes which control glucose utilization by cells--hexokinase (G-->G6P), phosphofructokinase (F6P-->F1,6 bisP), and pyruvate dehydrogenase (pyr-->AcCoA), glycogen synthase, and inhibits enzymes which favor gluconeogenesis.