The following diagram shows how the rate of an enzymatic reaction is affected by substrate concentration. a) Calculate the Km and Vmax for this enzyme. b) In the presence of an inhibitor the values of Vmax and Km are 10nM/s and 40M, respectively. What type of inhibition has occurred? Motivate your answer. Note that in the diagram the units for reaction rate (V) and substrate concentration ([S]) are nM/s and M, respectively