An enzyme facilitates chemical reactions by: Select one: a. Increasing the free-energy difference between reactants and...
An enzyme facilitates chemical reactions by:
Select one:
a. Increasing the free-energy difference between reactants and products.
b. Decreasing the free-energy difference between reactants and products.
c. Lowering the activation energy of the reaction.
d. Raising the activation energy of the reaction.
e. None of the above.
Q2.
Enzymes are important components of biological systems because they:
Select one:
a. Speed up reactions.
b. Reduce the activation energy of reactions allowing them to occur.
c. Catalyze specific reactions, allowing for the regulation of metabolism.
d. b and c.
e. a, b, and c.
Homework Answers
Q1. Answer is c. Lowering the activation energy of the reaction.
Because enzyme catalyze chemical reaction and speed up the process by reducing the activation energy of the reaction. Catalyst lower the activation energy and increases the rate of reaction.
Q2. Answer is e. a, b and c.
Because enzyme increases the speed of reaction by reducing the activation energy of the reactions allowing them to occur. Specific enzymes catalyze specific reaction and allowing for the regulation of metabolism.
Add Answer to:
An enzyme facilitates chemical reactions by:
Select one:
a. Increasing the free-energy difference between reactants and...
An enzyme affects the rate of a chemical reaction by A. decreasing the free energy change...
An enzyme affects the rate of a chemical reaction by A. decreasing the free energy change of the reaction. B. increasing the free energy change of the reaction. C. lowering the energy of activation of the reaction. D. displacing the equilibrium constant. E. raising the energy of activation of the reaction.
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...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
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Match the items. a. Facilitates reactions by lowering the activation energy. b. Synthesis, or a process...
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How do enzymes catalyze reactions? A) Enzymes bind with and change the conformation of substrates. B)...
How do enzymes catalyze reactions? A) Enzymes bind with and change the conformation of substrates. B) Enzymes change the free energy of the reactants. C) Enzymes increase the activation energy of a reaction. D) Enzymes carry out a reaction without needing reactants. E) Enzymes are denatured by a reaction to catalyze it.
c. b. A+B e. a Free Energy d. Progress of the Reaction Given the energy diagram...
c. b. A+B e. a Free Energy d. Progress of the Reaction Given the energy diagram for the reaction of A+B --> C above, what is represented by the arrow marked d.? Select one: O A. Activation energy of the reverse catalyzed reaction o B. Energy difference between the catalyzed and uncatalyzed reactions OC. Activation energy of the reverse uncatalyzed reaction o D. Energy difference between the reactants and products
9. Which of the following statements about enzyme catalyzed reactions is NOT true? a. Enzymes form...
9. Which of the following statements about enzyme catalyzed reactions is NOT true? a. Enzymes form complexes with their substrates b. Enzymes lower the activation energy for chemical reactions c. Enzymes change the Key for chemical reactions d. Many enzymes change shapes slightly when substrate binds 10. To overcome an energy barrier between reactants and products, energy must be provided to get the reaction started. This energy, which is recovered as the reaction proceeds, is called: a. Activation energy b....
Which molecule "holds electrons" that can be used for energy transfer in living systems? a dATP...
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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...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
Enzymes are biological catalysts and Unction by A) increasing the free energy in a system. B) lowering the activation energy of a reaction. C) lowering entropy in a system. D) increasing the temperature near a reaction. E) altering the equilibrium of a reaction. Which of the following contributes to the specificity of enzymes? A) Each enzyme has a wide range of temperature and pH optimum B) Each enzyme has an active site that interacts with many C) Substrates themselves may...
Match the items. a. Facilitates reactions by lowering the activation energy. b. Synthesis, or a process that builds new substances. C. Energy needed to to initiate a reaction. d. Degradation, or a process that breaks down substances. e. The sum total of chemical processes within an organism. 1. Metabolism 2. Catabolism 3. Anabolism 4. Catalyst 5. Activation Energy Check Ansorer
c. b. A+B e. a Free Energy d. Progress of the Reaction Given the energy diagram for the reaction of A+B --> C above, what is represented by the arrow marked d.? Select one: O A. Activation energy of the reverse catalyzed reaction o B. Energy difference between the catalyzed and uncatalyzed reactions OC. Activation energy of the reverse uncatalyzed reaction o D. Energy difference between the reactants and products
9. Which of the following statements about enzyme catalyzed reactions is NOT true? a. Enzymes form complexes with their substrates b. Enzymes lower the activation energy for chemical reactions c. Enzymes change the Key for chemical reactions d. Many enzymes change shapes slightly when substrate binds 10. To overcome an energy barrier between reactants and products, energy must be provided to get the reaction started. This energy, which is recovered as the reaction proceeds, is called: a. Activation energy b....
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