Concept explainers
To determine: Whether ∆G is zero, or have a positive value or a negative value in a reaction in which enthalpy decreases and entropy increases.
Introduction: Under conditions of a biochemical reaction, free energy (G) is defined as the amount of energy available to perform work. Entropy is defined as degree of randomness in a system and enthalpy is defined as the total potential energy of a system.
To determine: Whether the given reaction in which enthalpy decreases and entropy increases is endergonic or exergonic.
Introduction: The
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Biology (MindTap Course List)
- Can the thermodynamic property Δ G° be used to predict the speed of a reaction in a living organism? Why or why not?arrow_forwardConsider the following chemical equation whose delta(G) = 9kcal/mol: AC + BD ---> AB + CD what are the reactants and what are the products is this reaction spontaneous? How do you know? Is energy released or consumed by this reaction? If an enzyme, which catalyzes this reaction is added, what will happen to delta (G) If this reaction is coupled to another reaction, whose delta(G) is -12 kcal/mol, what will be the net delta(G) value? will the overall reaction be spontaneousarrow_forwardDoes entropy increase or decrease in the following process?arrow_forward
- 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.arrow_forwardWhich of the terms in the Gibbs free energy equation denotes enthalpyarrow_forwardDerive an Equation that explains the realtionship between kE and kN with respect to the equilibrium constants provided in the reaction scheme provided below. Assume that the enzyme must bind with A before it binds with B. The two reactions are related by the following reaction scheme:provided below.arrow_forward
- What is meant by the term activation energy?arrow_forwardConsider 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?arrow_forwardFind the net ΔG° of the reaction.arrow_forward
- How many steps are depicted in this reaction coordinate diagram?arrow_forwardConsider an enzyme catalyzed reaction taking place in an aqueous solution. If the earlier process of folding the enzyme results in a large decrease in the entropy of the system, how would this impact the rate of the catalyzed reaction.arrow_forwardDefine entropy and enthalpy. Do living cells increase entropy within themselves? Do they increase entropy in the environment?arrow_forward
- Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax