Bio & Biochem Quiz
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FOUNDATIONAL CONCEPT 1: BIOMOLECULES AND METABOLISM
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In a purified system at 298 K, an enzyme E catalyzes S⇌PS \rightleftharpoons P. Equilibrium measurements (with or without E) give Keq=10K_{eq}=10 for S⇌PS \rightleftharpoons P. Standard free energy is related by ΔG∘=−RTln⁡Keq\Delta G^\circ = -RT\ln K_{eq}, with R=8.314 J⋅mol−1⋅K−1R=8.314\ \text{J}\cdot\text{mol}^{-1}\cdot\text{K}^{-1}. Which conclusion about energy changes is most consistent with thermodynamic principles for adding E to the reaction mixture?
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