Homework Answers
a). All catalysts, including enzymes, function by forming a transition state, with the reactants, of lower free energy than would be found in the uncatalysed reaction.
b) Enzymes can't make an energetically unfavorable reaction into a favorable reaction, but they can make a favorable reaction go faster.
c). Enzymes by their very nature do not slow down chemical reaction rates.
d). Induced fit proposes that the initial interaction between enzyme and substrate is relatively weak, but that these weak interactions rapidly induce conformational changes in the enzyme that strengthen binding.
e). Enzymes speed up the attainment of equilibrium without affecting the position of equilibrium.
Choice e is the correct answer.
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Question 4 Enzymes... ... lower the transition state energy of the uncatalyzed reaction. ... create energy...
Enzymes are important molecules in biochemistry that catalyze reactions. The energy diagram illustrates the difference between...
Enzymes are important molecules in biochemistry that catalyze reactions. The energy diagram illustrates the difference between a catalyzed reaction and an uncatalyzed reaction. Label the energy diagram. Answer Bank AG for reaction activation energy catalyzed reaction reactants (substrate) free energy uncatalyzed reaction reaction progress products transition state What ways do enzymatic catalysts increase the rates of reactions? They shift the reaction equilibrium toward the products. They lower the activation energy of the reaction They decrease the free energy of the...
Select all of the mechanisms by which enzymes can lower the activation energy of a reaction:...
Select all of the mechanisms by which enzymes can lower the activation energy of a reaction: --separating reactants to prevent excess reaction speeds --bringing molecules together or orienting them in favorable positions --altering the energy of the products --creating a favorable environment (like the exclusion of water around reactants). --altering the energy of the reactants
3. Look at Figure 16.22 (p.727), the reaction energy diagrams for the two step reactions of...
3. Look at Figure 16.22 (p.727), the reaction energy diagrams for the two step reactions of a) NO, and F, and b) NO and O2 Write down the mechanisms for both reactions, and these mechanisms based on the corresponding reaction energy diagrams. IMG_0338.jpg v Q Search Depicting a Multistep Mechanism with a Reaction Energy Diagram Figu re 16.22 shows reaction energy diagrams for two reactions, each of which has a two-step mechanism, shown below the diagram. The reaction of NO,...
4 pts Question 6 The free energy diagram for this reaction hav[ Select ] transition state(s)...
4 pts Question 6 The free energy diagram for this reaction hav[ Select ] transition state(s) and [Select) intermediat 3 Ü 13° Question 6 4 pts The free energy diagram for this reaction has (Select] + transition state(s) and ✓ Select] intermediate(s). + HS -
UUUUUUUUU 4. For an endothermic reaction: Is the energy of the products higher or lower than...
UUUUUUUUU 4. For an endothermic reaction: Is the energy of the products higher or lower than reactants? (circle one) b. Is heat released or absorbed c is the sign for AH positive or negative? S a. Since reactions are favorable when they release energy and form lower energy products, which reaction - (a) or (b) - is favorable? b. What is the sign (+ or -) for the energy (enthalpy) value of a favorable reaction Manager: Check to ensure that...
Due l Map ddb Late s Products State Activation Energy Reactants (Substrate) Points reaction Grade t...
Due l Map ddb Late s Products State Activation Energy Reactants (Substrate) Points reaction Grade t G for Descrip Free Energy Policies Reaction Progress You can You can you get You can v students There is n ) eTex below... > Help What ways do enzymatic catalysts increase the rates of reactions? > Webl They promote the formation of a transition state. Thau chift the martion enuilhrisum > Techn Hint
I need help please Question 6 Enzymes increase reaction rates by Not yet answered Points out...
I need help please
Question 6 Enzymes increase reaction rates by Not yet answered Points out of 1.00 P Flag question Select one: a decreasing the activation energy requirement. b. converting anabolic reactions into catabolic reactions. c. adding energy to the substrate molecules. O d. adding ATP to the reaction. e, slowly oxidizing the reactants. Question 7 What term refers to a loss in the native shape of an enzyme, often caused by a change in temperature or pH? Not...
I answered E but I cannot figure out part F? Using your value from the previous...
I answered E but I cannot figure out part F?
Using your value from the previous question, determine how many
H bonds or dipole interactions would be required to achieve a rate
enhancement of 10^6.
Part E A rate enhancement of 100 requires that the enzyme bind its transition state complex with higher affinity than its substrate. Using the Arrhenius equation, shown before this part, find AAGEat for a rate enhancement of 106 at 298 K. Express AAGEat in kJ/mol...
Question 1 and 2 of the worksheet? Shang 22 In this figure, P2 is lower energy...
Question 1 and 2 of the worksheet?
Shang 22 In this figure, P2 is lower energy than P1. By the Hammond postulate, TS2 is also lower energy as well as structurally more like the reactants. Thus the activation energy. EA[2) is also lower Trends in Nucleophile Strength For this discussion, we have to assume the rate factors above apply in reverse that a faster reaction rate is associated with a more exothermic reaction. For nucleophiles, the neutral nucleophiles (amines, alcohols,...
I'd like to ask the answers for all of the uestions Question 1. A reaction in...
I'd
like to ask the answers for all of the uestions
Question 1. A reaction in an anabolic pathway in a cell has a AG of +2.5 kcal/mol. Which of the following is true regarding this reaction? A. It will occur spontaneously. B. The product of the reaction has a lower free energy than the reactants. C. It can occur if it is coupled to ATP hydrolysis. D. It is an exergonic reaction. E. It is breaking a polymer into...
Enzymes are important molecules in biochemistry that catalyze reactions. The energy diagram illustrates the difference between a catalyzed reaction and an uncatalyzed reaction. Label the energy diagram. Answer Bank AG for reaction activation energy catalyzed reaction reactants (substrate) free energy uncatalyzed reaction reaction progress products transition state What ways do enzymatic catalysts increase the rates of reactions? They shift the reaction equilibrium toward the products. They lower the activation energy of the reaction They decrease the free energy of the...
3. Look at Figure 16.22 (p.727), the reaction energy diagrams for the two step reactions of a) NO, and F, and b) NO and O2 Write down the mechanisms for both reactions, and these mechanisms based on the corresponding reaction energy diagrams. IMG_0338.jpg v Q Search Depicting a Multistep Mechanism with a Reaction Energy Diagram Figu re 16.22 shows reaction energy diagrams for two reactions, each of which has a two-step mechanism, shown below the diagram. The reaction of NO,...
4 pts Question 6 The free energy diagram for this reaction hav[ Select ] transition state(s) and [Select) intermediat 3 Ü 13° Question 6 4 pts The free energy diagram for this reaction has (Select] + transition state(s) and ✓ Select] intermediate(s). + HS -
UUUUUUUUU 4. For an endothermic reaction: Is the energy of the products higher or lower than reactants? (circle one) b. Is heat released or absorbed c is the sign for AH positive or negative? S a. Since reactions are favorable when they release energy and form lower energy products, which reaction - (a) or (b) - is favorable? b. What is the sign (+ or -) for the energy (enthalpy) value of a favorable reaction Manager: Check to ensure that...
Due l Map ddb Late s Products State Activation Energy Reactants (Substrate) Points reaction Grade t G for Descrip Free Energy Policies Reaction Progress You can You can you get You can v students There is n ) eTex below... > Help What ways do enzymatic catalysts increase the rates of reactions? > Webl They promote the formation of a transition state. Thau chift the martion enuilhrisum > Techn Hint
I need help please
Question 6 Enzymes increase reaction rates by Not yet answered Points out of 1.00 P Flag question Select one: a decreasing the activation energy requirement. b. converting anabolic reactions into catabolic reactions. c. adding energy to the substrate molecules. O d. adding ATP to the reaction. e, slowly oxidizing the reactants. Question 7 What term refers to a loss in the native shape of an enzyme, often caused by a change in temperature or pH? Not...
I answered E but I cannot figure out part F?
Using your value from the previous question, determine how many
H bonds or dipole interactions would be required to achieve a rate
enhancement of 10^6.
Part E A rate enhancement of 100 requires that the enzyme bind its transition state complex with higher affinity than its substrate. Using the Arrhenius equation, shown before this part, find AAGEat for a rate enhancement of 106 at 298 K. Express AAGEat in kJ/mol...
Question 1 and 2 of the worksheet?
Shang 22 In this figure, P2 is lower energy than P1. By the Hammond postulate, TS2 is also lower energy as well as structurally more like the reactants. Thus the activation energy. EA[2) is also lower Trends in Nucleophile Strength For this discussion, we have to assume the rate factors above apply in reverse that a faster reaction rate is associated with a more exothermic reaction. For nucleophiles, the neutral nucleophiles (amines, alcohols,...
I'd
like to ask the answers for all of the uestions
Question 1. A reaction in an anabolic pathway in a cell has a AG of +2.5 kcal/mol. Which of the following is true regarding this reaction? A. It will occur spontaneously. B. The product of the reaction has a lower free energy than the reactants. C. It can occur if it is coupled to ATP hydrolysis. D. It is an exergonic reaction. E. It is breaking a polymer into...
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