When does coupling occur (when energy is released)? - ProProfs Discuss
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When does coupling occur (when energy is released)?

When does coupling occur (when energy is released)?

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A. Used to drive another exergonic reaction.
B. Used to drive an endergonic reaction.
C. Lost as nonusable heat to the environment.
D. Used to decrease the entropy of the universe.
E. All of the above are correct.

This question is part of Ch 6 Energy & Enzyme Quiz
Asked by Rnreda on Oct 26, 2016

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2 Answers

f.Brian

F.Brian

Answered on Jan 29, 2018

In Physics coupling occurs when the energy released by an exergonic reaction is used to drive an endergonic reaction. Exergonic reactions are reactions that lose energy as the process takes place while endergonic reactions are reactions that require energy to be driven.

Am example of an exergonic reaction is cellular respiration and an example of a endergonic reaction is photosynthesis. The coupling of the two reactions can work to the advantage of the reactions to give them enough drive to be completed.

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John Smith

John Smith

Answered on Oct 26, 2016

Used to drive an endergonic reaction.
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