Describe the action of enzymes in terms of activation energy, rate reaction and consumption.
3. "Enzymes affect reaction rates, not equilibria." This is a fundamental concept of enzyme action. Explain, in your own words, why enzymes cannot alter the equilibrium of a reaction. Then explain how enzymes can actually speed up a reaction. 4. How is the activation energy AG different from the biochemical standard free energy change AG"? 5. Explain why AG's p can be different from AG p.s. Describe the implication of this difference in terms of the direction of the reaction...
What is the energy of activation? 16. How do enzymes speed the rate of reaction? 17. Talk about the effect of the following on enzyme reaction rate: a) Substrate concentration b) pH c) Temperature 18. How do vitamins play a part in enzymatic reactions?
1. Relate reaction rate and activation energy to enzymes as a biological equivalency for heat 2.Name 2 other "final electron acceptors" used by bacteria 3.Evaluate the necessity for fermentation if glycolysis is the part of the process that creates ATP
Enzymes work by lowering the _____ of a reaction. Select one: a. activation energy b. entropy c. change in free energy d. free energy
Describe the relationship of activation energy with rate of reaction and the effect a catalyst has on the activation energy. Name two other ways to speed up a reaction besides using a catalyst. 4. 5. Consider the following mechanism for a reaction: No,CNO, + Cl (slow) No,CI+C->NO, +CIh (fast) (a) Write the net reaction and identify any intermediates (b) Derive the rate law for the 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
the activation energy di the reaction with an enzyme. the progress of the reaction. All of the following statements regarding the figure are correct EXCEPT? Figure 2. Energy profile of a chemical reaction with and without an enzyme Free Energy Progress of reaction - Even with the addition of an enzyme, an input of energy is needed for the reaction to progress. Energy is released from the reaction with or without an enzyme Even with the addition of an enzyme,...
21. Account for the relationship between the rate of a reaction and its activation energy. A. The rate of reaction will increase as the activation energy increases. B. The rate of reaction will increase as the activation energy decreases. C. The rate of reaction will remain the same as the activation energy decreases.
Question 49 2 pts Enzymes work either by lowering the activation energy or increasing the free energy of a reaction. True False Question 50 2 pts Adding more substrate will always speed up an enzyme catalyzed reaction, but adding more enzyme will never speed up the reaction rate. True False
describe the role of enzymes in the catalysis of biological reactions (include in the discussion substrate, product, active site, lock and key model, activation energy, enzyme substrate complex, and transition state complex, and steps of enzyme action)?