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Exergonic reactions have $ΔG < 0$, and endergonic reactions have $ΔG > 0$. Many biological reactions are endergonic, and yet they still occur and keep us alive.

Which of the following explains how this is possible?


Endergonic reactions in the body are exothermic, producing enough heat to shift the reaction to the products, making it spontaneous.


The equilibrium constant for endergonic reactions is really low, helping make the reactions spontaneous.


Endergonic reactions in the body have a very low entropy, helping drive these reactions spontaneously.


The endergonic reaction is coupled with an exergonic reaction, like ATP decomposition, to produce enough outside energy to occur.

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