Question

After eating, elevated levels of fructose 6-phosphate will stimulate ["phosphoprotein phosphatase or Protein kinase A (PKA)"]. This causes the dephosphorylation of the the phosphofructokinase 2/fructose 2,6-bisphosphate polypeptide to stimulate the activity of ["phosphofructokinase 2 or fructose 2,6-bisphosphatase"].This results in an increase of ["fructose 6-phosphate or fructose 2,6-bisphosphate"] and activation of ["glycolysis or gluconeogenesis"]         .

Choose one of the answers in the brackets.

Answer 1

when blood glucose level increases, after eating insulin is secreted which activates the phosphoprotein phosphatase, which removes the phosphate group from the phosphofructokinase 2/fructose 2,6-bisphosphatase, so the phosphofructokinase 2 is active, it increases the levels of fructose 2,6-bisphosphate, it activates the glycolysis by activating phosphofructokinase 1.

After eating, elevated levels of fructose 6-phosphate will stimulate phosphoprotein phosphatase. This causes the dephosphorylation of the phosphofructokinase 2/fructose 2,6-bisphosphatase polypeptide to stimulate the activity of phosphofructokinase 2. This results in an increase of fructose 2,6-bisphosphate and activation of glycolysis.