Which of the following are related for a given enzyme? A) V_max, K_M, and percentage of α -helix B) V_max, k_cat, and percentage of β -sheet C) V_max, k_cat, and turnover number D) V_max, K_M, and molecular weight E) None of these are related in any way

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Quizplus · Accepted Answer

C) V_max, k_cat, and turnover number are related because they all describe aspects of enzyme kinetics. Vmax represents the maximum rate of the reaction when the enzyme is saturated with substrate, kcat is the turnover number which indicates how many substrate molecules one enzyme molecule can convert per unit time, and the turnover number itself is a direct measure of enzyme catalytic activity.

Which of the Following Are Related for a Given Enzyme