The following data were obtained in a study of an enzyme known to follow michaelis-menten kinetics: substrate added (umol/min) (mmol/l) - - - - - - - - - - - - - 217 325 433 488 647 649 1,000 1,500 a. what is the approximate maximum velocity for this enzyme (be sure to include units)? explain how you know. b. what is the approximate michaelis-menten constant for this enzyme (be sure to include units)? explain how you know.