Which of the following graphs depicts the effect of substrate concentration on velocity of enzyme catalysed reaction?
Graph showing linear increase indefinitely
Graph showing a bell-shaped curve
Graph showing velocity increasing to a maximum (Vmax) and then plateauing (Hyperbolic curve)
Graph showing velocity decreasing with concentration
According to the text, 'With the increase in substrate concentration, the velocity of the enzymatic reaction rises at first. The reaction ultimately reaches a maximum velocity (Vmax) which is not exceeded by any further rise in concentration of the substrate'. This occurs because enzyme molecules become saturated. Figure 9.5(c) in the text illustrates this relationship.
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