Relation between reaction velocity and substrate concentration: michaelis-menten equation(a) at what substrate concentration would an enzyme with akcat of 30.0 s-1 and akm of 0.0050 m operate at one quarter of itsmaximum rate? (b) determine the fraction of vmax that would beobtained at the following substrate concentrations [s]: km , 2km, and 10km .(c) an enzyme that catalyzes the reaction xy is isolated from two bacterial species. the enzymes havethe same vmax but different km values on thesubstarte x. enzyme a has a km of 2.0μm, whileenzyme b has a km of 0.5 μm. the plot shows thekinetics of the reaction carried out with the same concentration ofeach enzyme and with [x] = 1μm. which curve corresponds towhich enzyme?