The Turnover Number for an Enzyme Is Equivalent to the Number

Multiple Choice

The turnover number for an enzyme is equivalent to the number of substrate molecules processed per second per enzyme molecule. To a test tube containing a 100 mM concentration of its substrate, you have added an enzyme at a final concentration of 10 µM, and have measured the rate of the reaction to be approximately 500 µM/sec. If the Km for the binding of the enzyme to this substrate is about 100 mM, what is the turnover number?

A) 100
B) 500
C) 1000
D) 5000
E) 10,000