An enzyme's specificity constant (k_cat/K_m) has a maximum upper limit due to: A) substrate concentration. B) enzyme concentration. C) the enzyme turnover number. D) diffusion of the enzyme and substrate together. E) the Michaelis constant.

Question

Quizplus · Accepted Answer

The specificity constant is limited by the rate of diffusion, as it represents the maximum efficiency with which an enzyme can catalyze a reaction when substrate concentration is not limiting.

An Enzyme's Specificity Constant (Kcat/Km) Has a Maximum Upper Limit

An Enzyme's Specificity Constant (K_cat/K_m) Has a Maximum Upper Limit