Which statement describes endergonic reactions?

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Multiple Choice

Which statement describes endergonic reactions?

Explanation:
Endergonic reactions are those that require energy input to proceed. The key indicator is a positive change in free energy (ΔG > 0), meaning the products end up with higher free energy than the reactants. Because energy must be supplied, these reactions are not spontaneous and are often driven by coupling to energy-releasing processes, such as ATP hydrolysis. In cells, many endergonic steps are anabolic—building larger molecules from smaller ones—and processes like active transport, which move substances against their concentration or electrical gradients. The essential idea is energy input and a positive ΔG, with real cellular examples like biosynthesis and active transport. The other statements either describe energy release (negative ΔG) or incorrectly imply that endergonic reactions never occur, which isn’t true.

Endergonic reactions are those that require energy input to proceed. The key indicator is a positive change in free energy (ΔG > 0), meaning the products end up with higher free energy than the reactants. Because energy must be supplied, these reactions are not spontaneous and are often driven by coupling to energy-releasing processes, such as ATP hydrolysis. In cells, many endergonic steps are anabolic—building larger molecules from smaller ones—and processes like active transport, which move substances against their concentration or electrical gradients. The essential idea is energy input and a positive ΔG, with real cellular examples like biosynthesis and active transport. The other statements either describe energy release (negative ΔG) or incorrectly imply that endergonic reactions never occur, which isn’t true.

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