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1. • • If energy is released during a chemical reaction, then the resulting value from the above equation will be a negative number. In other words, reactions that release energy have a ∆G < 0. A negative ∆G also means that the products of the reaction have less free energy than the reactants, because they gave off some free energy during the reaction.
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     6.2: Potential, Kinetic, Free, and Activation Energy

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   What does a negative g mean?

   • A negative ∆G also means that the products of the reaction have less free energy than the reactants, because they gave off some free energy during the reaction. Reactions that have a negative ∆G and consequently release free energy are called exergonic reactions. Think: ex ergonic means energy is ex iting the system.

   6.2: Potential, Kinetic, Free, and Activation Energy

   bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_1e_(OpenStax)/2:_The_Cell/06:_Metabolism/6.2:_Potential_Kinetic_Free_and_Activation_Energy

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   What happens if energy is released during a chemical reaction?

   • If energy is released during a chemical reaction, then the resulting value from the above equation will be a negative number. In other words, reactions that release energy have a ∆G < 0. A negative ∆G also means that the products of the reaction have less free energy than the reactants, because they gave off some free energy during the reaction.

   6.2: Potential, Kinetic, Free, and Activation Energy

   bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_1e_(OpenStax)/2:_The_Cell/06:_Metabolism/6.2:_Potential_Kinetic_Free_and_Activation_Energy

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   What is a small amount of energy needed for a chemical reaction?

   • This small amount of energy input necessary for all chemical reactions to occur is called the activation energy (or free energy of activation) and is abbreviated E A (Figure 6.2.5 6.2. 5 ). Why would an energy-releasing, negative ∆G reaction actually require some energy to proceed?

   6.2: Potential, Kinetic, Free, and Activation Energy

   bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_1e_(OpenStax)/2:_The_Cell/06:_Metabolism/6.2:_Potential_Kinetic_Free_and_Activation_Energy

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   Why is chemical equilibrium never reached in a living cell?

   • In a living cell, chemical reactions are constantly moving towards equilibrium, but never reach it. This is because a living cell is an open system. Materials pass in and out, the cell recycles the products of certain chemical reactions into other reactions, and chemical equilibrium is never reached.

   6.2: Potential, Kinetic, Free, and Activation Energy

   bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_1e_(OpenStax)/2:_The_Cell/06:_Metabolism/6.2:_Potential_Kinetic_Free_and_Activation_Energy

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3. quizlet.com › 96218843 › biology-energy-flash-cardsBIOLOGY: ENERGY Flashcards | Quizlet

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   What is the equation for cellular respiration? C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP energy. Which part of cellular respiration takes place in the cytoplasm of a eukaryotic cell? glycolysis. In what CELL STRUCTURE does CELLULAR RESPIRATION take place? The mitochondria. How would you describe the electron transport chain?

7. bio.libretexts.org › Bookshelves › Introductory_and6.2: Potential, Kinetic, Free, and Activation Energy

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   The ∆G of a reaction can be negative or positive, meaning that the reaction releases energy or consumes energy, respectively. A reaction with a negative ∆G that gives off energy is called an exergonic reaction.

8. www.bbc.co.uk › bitesize › topicsBioenergetics - GCSE Combined Science - BBC Bitesize

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   This interactive quiz is suitable for GCSE combined science students studying cellular respiration, aerobic and anaerobic respiration, oxygen debt, and metabolism. Photosynthesis - AQA. Plants ...

9. www.khanacademy.org › science › biologyEnergy and enzymes | Biology archive | Science | Khan Academy

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   Laws of thermodynamics. Free energy. ATP and reaction coupling. Introduction to enzymes. Enzyme regulation. Unit test. This unit is part of the Biology library. Browse videos, articles, and exercises by topic.