When substrate concentration is much greater than K_M,the rate of catalysis is almost equal to A) K_d. B) k_cat/ K_M. C) V_max. D) All of the answers are correct. E) None of the answers is correct.

Question

Quizplus · Accepted Answer

The Michaelis-Menten equation for enzyme-catalyzed reactions is given by:

V = (Vmax [S]) / (Km + [S])

When [S] >> Km, the denominator becomes negligible and the equation can be simplified to:

V ≈ Vmax

Therefore, when substrate concentration is much greater than KM, the rate of catalysis is almost equal to Vmax. Choice C is the only option that reflects this concept.

When Substrate Concentration Is Much Greater Than KM,the Rate of Catalysis

When Substrate Concentration Is Much Greater Than K_M,the Rate of Catalysis