Which of the following respiratory chain complexes generate enough energy in passing a pair of electrons through the complex to be able to phosphorylate adp to atp? (you may assume that the adp and atp are at standard state concentrations.) the standard state free energy change for the phosphorylation of adp to atp is -30.5 k mol'. the standard state free energy change for electron transfer reactions in complex ii is -13.5 kj mol' (select all that apply.)
a. complex i
b. complex ii
c. complex iii
d. complex iv