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31. If the AG values for reactions A and B are -100 kj/mol and -10 kJ/mol,...
Consider these hypothetical chemical reactions: A⇌B,ΔG= 13.7 kJ/mol B⇌C,ΔG= -27.2 kJ/mol C⇌D,ΔG= 6.20 kJ/mol What is...
Consider these hypothetical chemical reactions: A⇌B,ΔG= 13.7 kJ/mol B⇌C,ΔG= -27.2 kJ/mol C⇌D,ΔG= 6.20 kJ/mol What is the free energy, ΔG, for the overall reaction, A⇌D? Express your answer with the appropriate units. ΔG = Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP. In this way, luciferase can test for the presence of life. The coupled reactions...
12. Which of the following statements is true of enzyme catalysts? A B C To be...
12. Which of the following statements is true of enzyme catalysts? A B C To be effective, they must be present at the same concentration as their substrate. They can increase the equilibrium constant for a given reaction by a thousand-fold or more. They lower the activation energy for conversion of substrate to product. Their catalytic activity is independent of pH. They are generally equally active on D and L isomers of a given substrate. D E 13. In competitive...
TCO2E05 A particular reaction has AH = +27 kJ/mol and AGʻ = -42 kJ/mol. Which of the following best describes th...
TCO2E05 A particular reaction has AH = +27 kJ/mol and AGʻ = -42 kJ/mol. Which of the following best describes this reaction? Select one: O a. The reaction is endothermic and spontaneous. b. The reaction is endothermic and not spontaneous. c. The reaction is endothermic and could be spontaneous or not spontaneous depending on the sign of AS° O d. The reaction is exothermic and could be spontaneous or not spontaneous depending on the sign of AS° e. The reaction...
is meant by a "pacemaker" enzyme is an enume that catalyzes the fastest reaction in a...
is meant by a "pacemaker" enzyme is an enume that catalyzes the fastest reaction in a pathway A It is an nuryme the catalyzes the slowest reaction in a pathway c) It is in en ryme that requires a significant energy source to function D) It is an enzyme that requires a co-factor to function E) It is an enzyme that is covalently modified during the reaction process 24. What is the difference bet between the lock-and-key and the induced-fit...
1. What is AG at 25 °C (298 K) for the reaction below? Show your answer...
1. What is AG at 25 °C (298 K) for the reaction below? Show your answer with four significant figures Cs) + 026) CO268 AH=-393.5 kJ/mol AS=0.0029 kJ/mol K 2. A certain reaction has AH = 10.3 kJ/mol and AS = 42.7J/K-mol. Calculate AG in kJ/mol at 338 K. Show your answer with four significant figures 3. Consider the following potential energy diagram that represents two different reactions. Which reaction is spontaneous? Which reaction is faster? Reaction A Reaction B...
reaction A has Ea = 25 kJ mol-1 and reaction B has Ea = 35 kJ...
reaction A has Ea = 25 kJ mol-1 and reaction B has Ea = 35 kJ mol-1. If the two reactions proceed at the same rate at standard temperature (25°C), which reaction is faster at temperature (37°C)?
3. (a) S>P AG8.5 kcal/mol (b) S → P ΔG + 3.5 kcal/mol (c) S-P AG-3.5 kcal/mol (d) S-) P ΔG_-9.5 kcal/mol (e) S → P ΔG= +3.0 kcal/mol (f) S-) P ΔG__ 2.5 kcal/mol A. (5 points) Which reactions are s...
3. (a) S>P AG8.5 kcal/mol (b) S → P ΔG + 3.5 kcal/mol (c) S-P AG-3.5 kcal/mol (d) S-) P ΔG_-9.5 kcal/mol (e) S → P ΔG= +3.0 kcal/mol (f) S-) P ΔG__ 2.5 kcal/mol A. (5 points) Which reactions are spontaneous? B. Which reactions are not spontaneous? C. Which reaction(s) can "force" reaction (a) to proceed? D. Which reaction(s) can "force" reaction (e) to proceed? E. Which reaction can "force" both reaction (0) and (e) to proceed togethers at...
AH = 44.0 kJ/mol AS = 0.119 kJ/mol K The following reaction takes place at 120°C:...
AH = 44.0 kJ/mol AS = 0.119 kJ/mol K The following reaction takes place at 120°C: H20(1) - H2O(g) Which of the following must be true? Select one: O a. Two of these O b. The reaction is not spontaneous O c The reaction is spontaneous. O d. AG = 0 e. AGO
At what temperatures are the following reactions spontaneous? a) ΔH0 = -35 kJ/mol; ΔS0 = -75...
At what temperatures are the following reactions spontaneous? a) ΔH0 = -35 kJ/mol; ΔS0 = -75 j/Kˑmol b) ΔH0 = -35 kJ/mol; ΔS0 = +75 j/Kˑmol c) ΔH0 = +35 kJ/mol; ΔS0 = -75 j/Kˑmol d) ΔH0 = +35 kJ/mol; ΔS0 = +75 j/Kˑmol
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...
12. Which of the following statements is true of enzyme catalysts? A B C To be effective, they must be present at the same concentration as their substrate. They can increase the equilibrium constant for a given reaction by a thousand-fold or more. They lower the activation energy for conversion of substrate to product. Their catalytic activity is independent of pH. They are generally equally active on D and L isomers of a given substrate. D E 13. In competitive...
TCO2E05 A particular reaction has AH = +27 kJ/mol and AGʻ = -42 kJ/mol. Which of the following best describes this reaction? Select one: O a. The reaction is endothermic and spontaneous. b. The reaction is endothermic and not spontaneous. c. The reaction is endothermic and could be spontaneous or not spontaneous depending on the sign of AS° O d. The reaction is exothermic and could be spontaneous or not spontaneous depending on the sign of AS° e. The reaction...
is meant by a "pacemaker" enzyme is an enume that catalyzes the fastest reaction in a pathway A It is an nuryme the catalyzes the slowest reaction in a pathway c) It is in en ryme that requires a significant energy source to function D) It is an enzyme that requires a co-factor to function E) It is an enzyme that is covalently modified during the reaction process 24. What is the difference bet between the lock-and-key and the induced-fit...
1. What is AG at 25 °C (298 K) for the reaction below? Show your answer with four significant figures Cs) + 026) CO268 AH=-393.5 kJ/mol AS=0.0029 kJ/mol K 2. A certain reaction has AH = 10.3 kJ/mol and AS = 42.7J/K-mol. Calculate AG in kJ/mol at 338 K. Show your answer with four significant figures 3. Consider the following potential energy diagram that represents two different reactions. Which reaction is spontaneous? Which reaction is faster? Reaction A Reaction B...
3. (a) S>P AG8.5 kcal/mol (b) S → P ΔG + 3.5 kcal/mol (c) S-P AG-3.5 kcal/mol (d) S-) P ΔG_-9.5 kcal/mol (e) S → P ΔG= +3.0 kcal/mol (f) S-) P ΔG__ 2.5 kcal/mol A. (5 points) Which reactions are spontaneous? B. Which reactions are not spontaneous? C. Which reaction(s) can "force" reaction (a) to proceed? D. Which reaction(s) can "force" reaction (e) to proceed? E. Which reaction can "force" both reaction (0) and (e) to proceed togethers at...
AH = 44.0 kJ/mol AS = 0.119 kJ/mol K The following reaction takes place at 120°C: H20(1) - H2O(g) Which of the following must be true? Select one: O a. Two of these O b. The reaction is not spontaneous O c The reaction is spontaneous. O d. AG = 0 e. AGO
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...
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