8of the two enzymes studied, when plotting concentration versus reaction rate, enzyme a produces a no defined plot with shape and enzyme b produces a plot with shape. increases uniformly 8 x 10-3 decreases uniformly 40 x 10-3 40 the reaction rate of enzyme a as the concentration of substrate increases to its saturation point, and the reaction rate of enzyme b over the same set of conditions. given this data, enzyme obeys the michaelis-menten equation. analyzing the shape of this plot, the estimated value of vmax is mmol/s and km is mmol/l. 16 a hyperbolic a linear shows no trend