chapter 8



An Introduction to Metabolism



  • The Energy of Life




Which curve(s) on the graphs may represent the temperature and pH profiles of an enzyme taken from a bacterium that lives in a mildly alkaline hot springs at temperatures of 70°C or higher?


A) curves 1 and 5

B) curves 2 and 4

C) curves 2 and 5

D) curves 3 and 4

E) curves 3 and 5


Which temperature and pH profile curves on the graphs were most likely generated from analysis of an enzyme from a human stomach where conditions are strongly acid?


A) curves 1 and 4

B) curves 1 and 5

C) curves 2 and 4

D) curves 2 and 5

E) curves 3 and 4