Which of the following best describes the chemical meaning of the term “coupling”…
CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry
Problem
Which of the following best describes the chemical meaning of the term “coupling” when it is used to drive an otherwise non-spontaneous reaction?
(a) Harnessing the heat released by an exergonic reaction to raise the temperature enough that the endergonic reaction becomes spontaneous
(b) Linking an endergonic reaction to an exergonic one through a shared intermediate so that the combined process has ΔG∘<0
(c) Selecting two reactions whose ΔG∘ values are equal in magnitude but opposite in sign so that the overall ΔG∘=0
(d) Adding ATP to serve as a catalyst that provides energy for the endergonic reaction without being consumed