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Key Concepts exam 2,3

Key Concepts exam 2,3 - Key Concepts 8 1 Metabolism is and...

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Key Concepts 8 1. Metabolism is ___________ and it consists of two main categories of reactions: 2. What is the main idea of the first law of thermodynamics, and how does this relate to the biological reactions we'll be studying? 3. What is the main idea of the second law of thermodynamics, and how does this relate to the biological reactions we'll be studying? 4. What is an exergonic reaction, and why is its ΔG less than 0? 5. What is an endergonic reaction, and why is its ΔG greater than 0? 6. Life requires a constant input of energy in order to fight disorder. Where does the energy required to drive endergonic reactions usually come from? Where is the energy in this molecule? 7. What is meant by the term "coupling" in the context of using ATP to fuel endergonic reactions? 8. What is activation energy, and why do even exergonic reactions have them?
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9. Enzymes do not affect the equilibrium point or the ΔG of a reaction. What DO enzymes do, and how?
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