What is the purpose of metabolic coupling?

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Multiple Choice

What is the purpose of metabolic coupling?

Metabolic coupling uses energy released by exergonic reactions to power endergonic reactions. This lets energetically unfavorable steps proceed by transferring energy through carriers like ATP, NADH, or proton gradients. For example, ATP hydrolysis can drive substrate activation or active transport, while electron transport–generated proton motive force can power ATP synthesis. The goal isn’t to slow or simply store energy; it’s to convert the energy from one reaction into usable work for another essential process.

Metabolic coupling uses energy released by exergonic reactions to power endergonic reactions. This lets energetically unfavorable steps proceed by transferring energy through carriers like ATP, NADH, or proton gradients. For example, ATP hydrolysis can drive substrate activation or active transport, while electron transport–generated proton motive force can power ATP synthesis. The goal isn’t to slow or simply store energy; it’s to convert the energy from one reaction into usable work for another essential process.

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