21-4 For the glucose oxidase-catalyzed oxidation of glucose with oxygen at 0C, pH of 5.6, and an enzyme concentration of 1.17 x 10-5 M the rate of reaction is as follows: 1 kg + kg 1 1 Rate kaka ky[glucose]' ks[oxygen] PROBLEMS 405 = where kg = 2.1 x 103/mole-s, kz 650/s, kg = 1.3 x 10$/mole-s, and ka = 370/s. (a) What is the relation between rate and glucose concentration at an oxygen concentration of 10-3 M? (b) If the reaction rate is proportional to enzyme concentration what is the rate expression that includes both enzyme and glucose concentration? (c) Draw a graph showing the relations: (1) between rate and glucose concentration at an oxygen concentration of 10-3 M and of enzyme concentration of 10-5 M; and (2) between rate and enzyme concentration at an oxygen concentration of 10-'M and a glucose concentration of 10-2 M. 21-4 For the glucose oxidase-catalyzed oxidation of glucose with oxygen at 0C, pH of 5.6, and an enzyme concentration of 1.17 x 10-5 M the rate of reaction is as follows: 1 kg + kg 1 1 Rate kaka ky[glucose]' ks[oxygen] PROBLEMS 405 = where kg = 2.1 x 103/mole-s, kz 650/s, kg = 1.3 x 10$/mole-s, and ka = 370/s. (a) What is the relation between rate and glucose concentration at an oxygen concentration of 10-3 M? (b) If the reaction rate is proportional to enzyme concentration what is the rate expression that includes both enzyme and glucose concentration? (c) Draw a graph showing the relations: (1) between rate and glucose concentration at an oxygen concentration of 10-3 M and of enzyme concentration of 10-5 M; and (2) between rate and enzyme concentration at an oxygen concentration of 10-'M and a glucose concentration of 10-2 M