The Michaelis-Menten equation models the hyperbolic relationship between [S] and the initial reaction rate V for anenzyme-catalyzed, single-substrate reaction E + SES →E + P. The model can be more readily understood whencomparing three conditions: [S] << Km. [S] = Km, and [S] >> Km.Match each statement with the condition that it describes.Note that "rate" refers to initial velocity V, where steady state conditions are assumed. [Etotal] refers to the total enzymeconcentration and [Efree] refers to the concentration of free enzyme.[S] << KmIncreasing [Ewall will increase Km.Almost all active sites are empty.[S] = KmAnswer Bank[Enel is about equal to [Exotal].[ES] is much higher than [Efree][S] >> KmReaction rate is independent of [S].Not true for any of theseconditionsThe rate is half of the maximum rate.

Michaelis-Menten (MM) Kinetics relates the initial rate of a reaction with substrate concentration.…

Answered: [S] << Km [S] = Km [S] >> Km Not true…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

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Studies of oxygen transport in pregnant mammals show that the O2-saturation curves of fetal and maternal blood are markedly different when measured under the same conditions. Fetal erythrocytes contain astructural variant of hemoglobin, HbF, consisting of two α and two γ subunits (α2 γ2 ), whereas maternal erythrocytes contain HbA (α2β2).(a) Which hemoglobin has a higher affinity for oxygen under physiological conditions, HbA or HbF? Explain.(b) What is the physiological significance of the different O2 affinities?(c) When all the BPG is carefully removed from samples of HbA and HbF, the measured O2 -saturation curves (and consequently the O2 affinities) are displaced to the left. However, HbA now has a greater affinity for oxygen than does HbF. When BPG is reintroduced, the O2 -saturation curves return to normal, as shown in the graph. What is the effect of BPG on the O2 affinity of hemoglobin? How can the above information be used to explain the different O2 affinities of fetal and…
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The “mean-speed theorem” for finding average velocity under constant acceleration, proposed by the Oxford Calculators, and demonstrated geometrically by Nicole Oresme, is expressed algebraically as: density = weight/volume (m1)(v1) = (m2)(v2) (vm) = 1/2 (v0 + vf) s = (v0)(t) + 1/2 (a)(t2) velocity = distance/time
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[S] << Km [S] = Km [S] >> Km Not true for any of these conditions