Fill in the blanks: In energetically coupled reactions, a [anabolic or catabolic] or [endergonic or exergonic] reaction, which breaks down large molecules into smaller ones, usually provides the energy to drive an [catabolic or anabolic] or [exergonic or endergonic] reaction, which creates large molecules from smaller ones.

Fill in the blanks: In energetically coupled reactions, a [anabolic or catabolic] or [endergonic or exergonic] reaction, which breaks down large molecules into smaller ones, usually provides the energy to drive an [catabolic or anabolic] or [exergonic or endergonic] reaction, which creates large molecules from smaller ones.

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter7: Energy And Metabolism

Section: Chapter Questions

Problem 11TYU: PREDICT In the following reaction series, which enzyme(s) is/are most likely to have an allosteric...

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Which of the following statements helps best explain the reaction specificity of an enzyme? a) The shape and charge of the substrates are compatible with the active site of the enzyme. b) The free energy of the reactants is greater than the free energy of the products. c) The equilibrium constant of the reaction is much greater than 1. d) The concentration of the enzyme inside living cells is greater than the concentration of substrate.
A chemical reaction has a △G of -14 kcal/mol. Adding an enzyme has been shown to increase the reaction 10-fold. What would be the △G of the reaction when that enzyme is added? A) -1.4 kcal/mol B) -14 kcal/mol C) +14 kcal/mol D) -140 kcal/mol
For the chemical reaction that results in the formation of a peptide bond between two amino acids, Δ G = +4 kcal/mol. Based on this information, which of the following labels would be appropriate to describe this reaction? A) Exergonic B)Endergonic C) Redox D) Hydrolysis 2.
For this reaction: 6CO2 + 6H2O → C6H12O6 + 6O2, the products have 2760 kJ/mole more free energy than the reactants. So, which of the following statements best describes the reaction? a The reaction is endergonic because it converts molecules with less free energy to those with more free energy. b The reaction is exergonic because it converts molecules with less free energy to those with more free energy. c The reaction is exergonic because it converts molecules with more free energy to those with less free energy d The reaction is endergonic because it converts molecules with more free energy to those with less free energy.
Consider the analogy of the jiggling box containing coins that was described on page 85. The reaction, the flipping of coins that either face heads up (h) or tails up (T), is described by the equation h ↔ T, where the rate of the forward reaction equals the rate of the reverse reaction.a. What are ΔG and ΔG° in this analogy? b. What corresponds to the temperature at which the reaction proceeds? What corresponds to the activation energy of the reaction? assume you have an “enzyme,” called jigglase, which catalyzes this reaction. What would the effect of jigglase be and what, mechanically, might jigglase do in this analogy?
Which of the terms hydrolysis, saponification, hydrogenation, and oxidation apply to each of the following reaction changes? More than one term may apply in a given situation. Carbon–oxygen single bonds are broken. Glycerol is among the products. Fatty acid salts are among the products. Carbon–carbon double bonds are changed to carbon–carbon single bonds.
Fill in blank: An ES complex that releases 30 kj/mol of binding free energy will _____ (raise or lower) the activation energy barrier needed to reach the transition state.
When biological enzymes are heated, they lose their catalytic activity. The change that occurs is an ENDOTHERMIC and SPONTANEOUS process. Based on the given information, what is the sign of Δ˚G? Based on the given information, what is the sign of Δ˚H? Is the structure of the original enzyme MORE or LESS ordered than the new form? Explain your answer.
“Enzyme increases the rate of a reaction by lowering the activation energy. In doing so, it also changes the equilibrium of that reaction.” Do you agree/disagree with this statement? And why?
The graph presented here depicts the activation energy, or the amount of energy needed for a reaction to proceed, with and without an enzyme. a. Which reaction requires more energy to proceed—the one with or without an enzyme? How do you know? b. Is this reaction anabolic or catabolic? How do you know?
Define potential energy and kinetic energy and provide two specific examples of each. Explain how one form of energy can be converted into another. Will some energy be lost during this conversion? If so, what form will it take?
The following questions are based on the reaction A+ B ↔ C+D shown in Figure 8.1. 1. Which of the following terms best describes the progress of the reaction with respect to free energy change? a) endergonic, ∆G> 0 b) exergonic, ∆G> 0 c) exergonic, ∆G< 0 d) endergonic, ∆G< 0 2. Which of the following in Figure 8.1 remains unchanged by having an enzyme included? a) b b) d c) a d) c 3. The part labeled “C” on the above graph represents a) Energy of activation without enzyme b) Energy of activation with enzyme c) Amount of free energy released d) amount of energy required for the reaction progress