Which of the following statements about enzymes is true? a. Enzymes can make a nonspontaneous reaction...
Which of the following statements about enzymes is true?
a. Enzymes can make a nonspontaneous reaction spontaneous.
b. As more substrate is added, the reaction will continue to occur faster and faster.
c. An enzyme can couple a nonspontaneous reaction to a spontaneous reaction so that anabolic processes will occur.
d. Catabolic reactions are spontaneous and do not require enzymes to occur in the cell.
Homework Answers
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Which of the following statements about enzymes is true?
a. Enzymes can make a nonspontaneous reaction...
Which of the following statements about enzymes are true? Select all that apply: Enzymes increase reaction...
Which of the following statements about enzymes are true? Select all that apply: Enzymes increase reaction rates by lowering the energy of the products. Enzymes increase the rate at which products are created by preventing reactions from running backwards. Enzymes increase reaction rates by lowering the activation energy of a reaction. Enzymes increase reaction rates by interacting with the substrate molecules to facilitate the reaction, for example by contorting them to facilitate bond-breakage or orienting them to favor bond formation.
no explaination is needed 28) Which of the following is true for all exergonic reactions? A)...
no explaination is needed
28) Which of the following is true for all exergonic reactions? A) The reaction proceeds with a net release of free energy B) The products have more total energy than the reactants. C) A net input of energy from the surroundings is required for the reactions to proceed. D) The reactions are nonspontaneous 29) When ATP releases some energy, it also releases Inorganic phosphate. What purpose does this serve (if any) in the cell? A) It...
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....
BIOCHEMISTRY please answers the both questions Q1: Which of the following statements about enzymes are true?...
BIOCHEMISTRY please answers the both questions Q1: Which of the following statements about enzymes are true? (Check all that apply) A) Enzymes affect the activation energy of the reaction. b) Enzymes affect the equilibrium position of a chemical reaction. c) Enzymes affect the Gibbs Free Energy change of a chemical reaction. d) Enzymes decrease the time needed for a reaction to reach equilibrium. Q2: What best describes the nature of the active site. a) It is a rigid pocket that...
Indicate whether each of the following statements about enzymes is true or false. (Q12- 12. To be...
Indicate whether each of the following statements about enzymes is true or false. (Q12- 12. To be effective, they must be present at the same concentration as their substrate A. True B. False 13. They increase the equilibrium constant for the reaction, thus favoring product format A. True B. False 14. They increase the rate at which substrate is converted to product A. True B. False 15. They ensure that all substrate is converted to product. A. True B. False...
Which statement about enzyme catalyzed reactions is not true? a) enzymes form complexes with their substrates....
Which statement 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 K eq for chemical reactions. d) many enzymes change shape slightly when substrate binds. e) reactions occur at the "active site" of enzymes, where a precise 3D orientation of amino acids is an important feature of catalysis.
Which of the following statements about individual enzymes is NOT true? They are organic compounds, usually...
Which of the following statements about individual enzymes is NOT true? They are organic compounds, usually made of protein They are biological catalysts which increase the rates of chemical reactions Any given enzyme can function at any pH Enzymes denature if exposed to high temperature
Choice - Chapter 6 - Question 3 Part A Which of the following is true for...
Choice - Chapter 6 - Question 3 Part A Which of the following is true for anabolic pathways? They consume energy to build polymers from monomers. They do not depend on enzymes. They are usually spontaneous chemical reactions. They release energy as they degrade polymers to monomers. Submit Request Answer rovide Feedback Part D What name is given to the reactants in an enzymatically catalyzed reaction? reactors substrate active sites products Submit Request Answer Part E As a result of...
Which of the following statements concerning enzymes is true and correct? O Most enzymes are not...
Which of the following statements concerning enzymes is true and correct? O Most enzymes are not proteins Enzymes slow down the rate of chemical reactions. O An enzyme is very specific in terms of which substrates it can bind. O An enzyme is consumed by the catalytic process. Question 9 1 pts Which one of the following statements about energy is correct? O Entropy is the movement of molecules from areas of higher concentration to areas of lower concentration. O...
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...
no explaination is needed
28) Which of the following is true for all exergonic reactions? A) The reaction proceeds with a net release of free energy B) The products have more total energy than the reactants. C) A net input of energy from the surroundings is required for the reactions to proceed. D) The reactions are nonspontaneous 29) When ATP releases some energy, it also releases Inorganic phosphate. What purpose does this serve (if any) in the cell? A) It...
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....
Indicate whether each of the following statements about enzymes is true or false. (Q12- 12. To be effective, they must be present at the same concentration as their substrate A. True B. False 13. They increase the equilibrium constant for the reaction, thus favoring product format A. True B. False 14. They increase the rate at which substrate is converted to product A. True B. False 15. They ensure that all substrate is converted to product. A. True B. False...
Choice - Chapter 6 - Question 3 Part A Which of the following is true for anabolic pathways? They consume energy to build polymers from monomers. They do not depend on enzymes. They are usually spontaneous chemical reactions. They release energy as they degrade polymers to monomers. Submit Request Answer rovide Feedback Part D What name is given to the reactants in an enzymatically catalyzed reaction? reactors substrate active sites products Submit Request Answer Part E As a result of...
Which of the following statements concerning enzymes is true and correct? O Most enzymes are not proteins Enzymes slow down the rate of chemical reactions. O An enzyme is very specific in terms of which substrates it can bind. O An enzyme is consumed by the catalytic process. Question 9 1 pts Which one of the following statements about energy is correct? O Entropy is the movement of molecules from areas of higher concentration to areas of lower concentration. O...
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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