For a single-enzyme-single-substrate reaction, the half-life of the enzyme can be calculated using the following expression, wherein k is the first order rate c

For a single-enzyme-single-substrate reaction, the half-life of the enzyme can be calculated using the following expression, wherein k is the first order rate constant or deactivation constant 693 2.3log 2 (b) (a) k k 2.3In2 69.3 (c) (d) k k