Which of the following best describes an exergonic reaction?

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Multiple Choice

Which of the following best describes an exergonic reaction?

Exergonic reactions release free energy and tend to proceed without needing an input of energy. They have a negative deltaG, meaning the products end up at a lower free energy than the reactants. This is why they can occur spontaneously and are often involved in breaking down larger molecules into simpler ones (catabolic processes), releasing energy that the cell can capture to do work or to drive other reactions. The energy released isn’t limited to heat; it can power cellular work or be used to drive endergonic processes via coupling. In contrast, reactions that require energy input have a positive deltaG and describe processes like synthesis (anabolic) or active transport. A zero deltaG describes a system at equilibrium with no net energy flow.

Exergonic reactions release free energy and tend to proceed without needing an input of energy. They have a negative deltaG, meaning the products end up at a lower free energy than the reactants. This is why they can occur spontaneously and are often involved in breaking down larger molecules into simpler ones (catabolic processes), releasing energy that the cell can capture to do work or to drive other reactions. The energy released isn’t limited to heat; it can power cellular work or be used to drive endergonic processes via coupling. In contrast, reactions that require energy input have a positive deltaG and describe processes like synthesis (anabolic) or active transport. A zero deltaG describes a system at equilibrium with no net energy flow.

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