29. In a Lineweaver-Burk double reciprocal plot, the intercept of the y-axis equals ______. (A) $K_{\mathrm{M}}$ (B) - $1 / K_{\mathrm{M}}$ (C) $V_{\max}$ (D) $1 / V_{\max}$ (E) $k_{\mathrm{cat}} / K_{\mathrm{M}}$.

4. Which of the following descriptions about the Michaelis-Menten rate equation is incorrect ? (A) KM measures the substrate concentration at which the reaction rate is Vmax/2 (B) kcat is the turnover number that measures the rate of the catalytic process (C) The ratio kcat/KM is a convenient measure of enzyme efficiency (D) kcat = Vmax/[Enz] (E) A competitive inhibitor decreases the apparent KM.

29. In a Lineweaver-Burk double reciprocal plot, the intercept of the y-axis equals ______.
(A) $K_{\mathrm{M}}$
(B) - $1 / K_{\mathrm{M}}$
(C) $V_{\max}$
(D) $1 / V_{\max}$
(E) $k_{\mathrm{cat}} / K_{\mathrm{M}}$.

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