I have the majority of the info I need, I just am not sure whether or not I am on the right track with this.
1) sodium citrate I am not so sure about
2) iodoacetate: will alkylate the -SH group of a Cys residue a the active site of G3PDH, inactivating the enzyme.  This inhibits G3P ---> 1,3-BPGa.
3) NaF: F- inhibits glycolysis by binding with PO4^3- to Mg^2+, forming a complex at the active site of the enzyme enolase, blocking 2-PGa from binding.  Enzyme inhibited.
4) significance of less H2O availability?  Can't seem to figure this one out.