The following 2 graphs below illustrate regulation of PFK-1…

The following 2 graphs below illustrate regulation of PFK-1 and FBPase-1 by F2,6BP (Fructose 2, 6-bisphosphate):    a) Is Fructose 2,6-BP an allosteric inhibitor of PFK-1: ? b)  Is Fructose 2,6-BP an allosteric inhibitor of FBPase-1 : ? c) For graph (a), what is the K0.5 for Fructose 6-phosphate in the absence of F26BP : ? d) What is the substrate for FBPase-1: ?