FIG. 3.

Graphical determination of f_e and f_s for strain 2CP-C in Fe(III) citrate-reducing culture (A) and 2-CP respiring cells (B), as indicated by the slope of the regression line. Reducing equivalents from acetate are plotted as electron equivalents ([H]) generated in the complete oxidation to CO₂. Reducing equivalents for energy formation are plotted as [H] consumed in the reduction of Fe(III) to Fe(II) or 2-CP to phenol. Reducing equivalents for biosynthesis are also plotted as [H] incorporated into biomass. The data are averaged from duplicate cultures, with error bars showing the standard deviation.