Which one of the following standard rate constants would have the lowest value and why? O k3 since it is separated by the highest activation energy barrier and limits the overall catalytic rate since it separates E from P O k-1 since it is separated by the highest activation energy barrier and limits the overall catalytic rate through a back reaction k2 since it is separated by the highest activation energy barrier and limits the overall catalytic rate by producing product O k1 since it is separated by the highest activation energy barrier and limits the overall catalytic rate since it forms ES

Which one of the following standard rate constants would have the lowest value and why? O k3 since it is separated by the highest activation energy barrier and limits the overall catalytic rate since it separates E from P O k-1 since it is separated by the highest activation energy barrier and limits the overall catalytic rate through a back reaction k2 since it is separated by the highest activation energy barrier and limits the overall catalytic rate by producing product O k1 since it is separated by the highest activation energy barrier and limits the overall catalytic rate since it forms ES

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

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Select the incorrect statement. With regards to free energy ΔG of the reaction below E+S ⇌ ES Negative ΔG mean the reaction toward is facourable More negative value of ΔG indicates stronger binding to S to E It is possible to compute disassociation constant from the ΔG value alone It is possible to calculate the term ( ΔH – T ΔS) from the value of ΔGalone ΔG = 0 indicates (ES)/(E)(S) =1 None of the above
The table below provides kinetic information when ADH is reacted with ethanol alone, NAD+ alone, and ethanol with NAD+ For the experiment that reacted both ethanol and NAD+ with ADH, estimate Vmax and KM for ADH
If the allosteric coefficient for ATCase increases from 250 to 1300, the rate of the N-carbamoylaspartate formation: O stays the same and the sigmoidal curve of reaction rate as a function of substrate shifts up. O decreases and the sigmoidal curve of reaction rate as a function of substrate shifts to the left. O increases and the sigmoidal curve of reaction rate as a function of substrate shifts to the left. O stays the same and the sigmoidal curve of reaction rate as a function of substrate shifts to the right. O decreases and the sigmoidal curve of reaction rate as a function of substrate shifts to the right. Question 9 Which of the following CANNOT be targeted for phosphorylation to modulate the activity of an enzyme? O Ser Ala O None of the amino acids listed can be targeted for phosphorylation to modulate enzyme activity The Tyr
The compound below which is labelled in two positions with 13c (as represented by the shaded spheres) was prepared and used to probe the mechanism of the aldolase enzyme employed in glycolysis. OH O Predict the pattern of 13c radiolabelling observed in the products: OH HO он 20,PO O LOPO,? но, OH 20,PO но. Hక్కి OH 20,PO Но, он 20;PO, HO. LOPO,2-
Find the net ΔG° of the reaction.
Consider the following redox reaction: lactate + NAD = pyruvate + NADH + H+ The relevant reductive half reactions are as follows: pyruvate + 2e + 2H+ lactate NAD+ + 2e+ H* = NADH E' -0.185 V = E' -0.320 V What is the AE' of the redox reaction? -0.505 V -0.135 V 0.135 V ○ 0.505 V
With a ∆G°´ of -16.7 kJ/mol, the reaction catalyzed by hexokinase is considered to be _____. at equilibrium substrate and product concentration dependent freely reversible metabolically irreversible none of the above
Using understanding of the thermodynamics laws, explain the energy transformations for the following processes. a. Glucose – Pyruvase + 2ATF + 2NADH b. Pyruvate – Acetyl-CoA + NaDH c. Citric acid – Oxoloacetate + 3NaDH + FADH2 + ATP d. H20 at PSII – ATP e. Photon at PSI – NADPH f. Co2 + RuBp – 3PG + ATP + NADPH – G3P (1/6 of which is converted to glucose)
Bypass reaction in the anabolic pathway often occurs when A The ΔG of the reverse reaction in the catabolic pathway has a large negative value B The ΔG of the reverse reaction in the catabolic pathway has a large positive value C The ΔG of the reaction in the anabolic pathway is close to zero D The ΔG of the reaction in the anabolic pathway is positive E None of the above
What is the reaction potential for oxidation of NADH (for completely passing electrons from NADH to O2) with units? 2. What is the reaction potential for oxidation of FADH2 (from FADH2 to O2) with units? 3. Which reaction has a more negative deltaG?
Consider the following free energy diagram for an uncatalyzed and enzyme-catalyzed reaction. Select all the statements that are true. Without enzyme With enzyme A+B Time AB Oa. The reaction is now spontaneous due to the addition of enzyme b. The rate of the enzyme catalyzed reaction is faster than the uncatalyzed reaction O C. The reaction is exergonic O d. The change in free energy for the reaction is greater in the catalyzed reaction, compared to the uncatalyzed reaction e. The enzyme stabilizes the transition state for the reaction Released Energy pes
This reaction an enzymatic and reaction has kinetic constants k1, k-1, and k2 were found to be 107 M/s, 4.1-104/s1, and 10²-s1, E+ P What is Km? E+S ES