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2 6. Which of the following is true of enzymes? The majority of enzymes are nonspecific...
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....
Enzymes are biological catalysts and Unction by A) increasing the free energy in a system. B)...
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...
Enzymes have a number of functions. Which of the following are characteristics of enzymes. Group of...
Enzymes have a number of functions. Which of the following are characteristics of enzymes. Group of answer choices They lower the activation energy of a reaction They temporarily form transition-state complexes with substrates They contain active sites for substrate binding They decrease the rate at which a reaction occurs
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.
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.
QUESTION 28 Among the following statements concerning the enzymes, all correct answers An apoenzyme consists of...
QUESTION 28 Among the following statements concerning the enzymes, all correct answers An apoenzyme consists of a holoenzyme and a.coenzyme Enzymes are biological catalysts that do not affect the reaction equilibrium The rate of reaction depends on the pH The catalytic site is formed of an active site and binding sites The activation energy of the uncatalyzed reaction is greater than the activation energy of the catalyzed reaction QUESTION 29 Which of the following statements are corrects? When the substrate...
1. Consider the reaction below. N2(g) + 3 H2(g) ⇋ 2 NH3(g) Which of the following...
1. Consider the reaction below. N2(g) + 3 H2(g) ⇋ 2 NH3(g) Which of the following changes would cause less NH3 to be produced? decreasing the volume adding N2 increasing the volume adding H2 2. Consider the following reaction. N2(g) + 3 H2(g) ⇋ 2 NH3(g) The forward reaction is exothermic. Which of the following changes would cause less NH3 to be produced? decreasing the temperature adding H2 increasing the temperature adding N2 3. What is the effect of a...
Which of the following correctly applies to a catalyst? A. They do not actually participate in...
Which of the following correctly applies to a catalyst? A. They do not actually participate in the chemical reaction and therefore is unchanged at the end of the reaction. B. They provide an alternate lower energy mechanism by which the reaction proceeds. C. They must be in the same phase as the reactants in the chemical reaction. D. Biological catalysts are proteins called substrates. A) A, D B) A, B C) B, C D) B
biochemistry if you could please help me answer the following questions! * 1. (5 pts) Which...
biochemistry
if you could please help me answer the following questions!
* 1. (5 pts) Which of the following is a catalytic mechanism utilize by enzymes? Multiple answers may be correct. Select all that are correct. 1. Acid-base a) acid-base catalysis d. metal-ion catalysis 12. Covalent b covalent catalysis e. transition state binding c. heterogeneou 3. Metalion . Proximin onentation, E 2. 76 pts) What is the "steady-state" assumption in the derivation of the s.clectrosch? Tynsin Michaelis-Menten equation? Sie binding...
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase...
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase activation energy requirements. b. Activation energy is required to initiate exergonic reactions. Heat cannot supply activation energy. c. d. Stomach acid inactivates pepsin. 2. Which is not an example of an exergonic reaction? a. photosynthesis b. a nuclear reaction in the sun c. ATP → ADP + Pi d. glucose breakdown .3, which of the following is True? a. ATP is a long-term energy...
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....
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...
QUESTION 28 Among the following statements concerning the enzymes, all correct answers An apoenzyme consists of a holoenzyme and a.coenzyme Enzymes are biological catalysts that do not affect the reaction equilibrium The rate of reaction depends on the pH The catalytic site is formed of an active site and binding sites The activation energy of the uncatalyzed reaction is greater than the activation energy of the catalyzed reaction QUESTION 29 Which of the following statements are corrects? When the substrate...
biochemistry
if you could please help me answer the following questions!
* 1. (5 pts) Which of the following is a catalytic mechanism utilize by enzymes? Multiple answers may be correct. Select all that are correct. 1. Acid-base a) acid-base catalysis d. metal-ion catalysis 12. Covalent b covalent catalysis e. transition state binding c. heterogeneou 3. Metalion . Proximin onentation, E 2. 76 pts) What is the "steady-state" assumption in the derivation of the s.clectrosch? Tynsin Michaelis-Menten equation? Sie binding...
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase activation energy requirements. b. Activation energy is required to initiate exergonic reactions. Heat cannot supply activation energy. c. d. Stomach acid inactivates pepsin. 2. Which is not an example of an exergonic reaction? a. photosynthesis b. a nuclear reaction in the sun c. ATP → ADP + Pi d. glucose breakdown .3, which of the following is True? a. ATP is a long-term energy...
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