Final answer:
To calculate the enzyme turnover number, the value of Vmax is used, which represents the maximum rate of an enzymatic reaction at substrate saturation. Option c is the correct answer.
Step-by-step explanation:
The value used to calculate the enzyme turnover number is the Vmax (c), which represents the maximum rate of the enzymatic reaction when the enzyme is saturated with substrate.
The turnover number is a measure of how many substrate molecules one enzyme molecule can convert into product per unit time under saturated conditions. This concept is central to understanding enzyme kinetics.
The Michaelis-Menten constant, Km, is the substrate concentration at which the velocity is half of the Vmax, but it does not directly provide the turnover number. Rather, Vmax, when divided by the enzyme concentration, gives the turnover number, also known as kcat.