Compared to the uncatalyzed reaction, which parameters change in the presence of an enzyme? All of...
an uncatalyzed reaction has an equilibrium constant, Keq of 50. in the presence of an appropriate enzyme, the forward rate of the reaction increased by 20 fold. what is the equilibrium constant in the presence of the enzyme
The activation energy of a certain uncatalyzed biochemical reaction is 46.7 kJ/mol. In the presence of a catalyst at 39ºC, the rate constant for the reaction increases by a factor of 2030 as compared with the uncatalyzed reaction. Assuming the frequency factor A is the same for both the catalyzed and uncatalyzed reactions, calculate the activation energy for the catalyzed reaction. Activation energy = kJ/mol
The activation energy of a certain uncatalyzed biochemical reaction is 47.2 kJ/mol. In the presence of a catalyst at 38ºC, the rate constant for the reaction increases by a factor of 2050 as compared with the uncatalyzed reaction. Assuming the frequency factor A is the same for both the catalyzed and uncatalyzed reactions, calculate the activation energy for the catalyzed reaction. Activation energy = kJ/mol
Uncatalyzed Catalyzed Enzyme-substrate Complex In the above reaction, the lower curve is an enzyme-catalyzed reaction where the activation energy is notably lower than the uncatalyzed reaction. Suppose the enzyme in the diagram was mutated in such a way that its affinity for the substrate increased 100 fold, thereby affecting the enzyme-substrate complex portion of the curve. Assume that there was no other effect. Would you expect the reaction rate catalyzed by the altered enzyme to be faster, slower, or equal...
The Ea (enzyme) is less than Ea (uncatalyzed). How does this change the spontaneity of the reaction?
Which of the following sets of parameters are altered when a reaction is carried out in the presence of a catalyst? Select one: A. ΔG°, ΔH°, Keq B. ΔH°, ΔS°, krate C. ΔH°, ∆S°, Ea D. ΔG°, krate, Keq E. Ea, free energy of activation, krate
Comparing an uncatalyzed reaction to the same reaction with a catalyst, which one of the following is always true? O The catalyzed reaction will be exergonic. O The catalyzed reaction will have higher activation energy. O The catalyzed reaction will be endergonic. O The catalyzed reaction will have lower activation energy.
An enzyme catalyzed reaction was performed in the presence and in the absence of an inhibitor. The Lineweaver Burk plot showed competitive kinetics with x-intercepts of -10mm -1 and -3.5mm -1 in the presence and absence of the inhibitor respectively. If the inhibitor concentration used was 2micro molar (UM), calculate KI for the inhibitor enzyme binding? a. none of the above b. 0.135nM c. 0.054nM d. 0.225nM e. 1077 nM
An enzyme catalyzed reaction was performed in the presence and in the absence of an inhibitor. The Lineweaver Burk plot showed non-competitive kinetics with y- intercepts of 15s -1 and 5 s -1 in the presence and absence of the inhibitor respectively. If the inhibitor binding constant was 0.5nM, calculate [I ] used in this reaction? a. 0.135nM b. none of the above c. 0.225nM d. InM e. 0.125nM
the reaction of glyceryl tristearate with water in the presence of of a lipase enzyme?