Questions and Answers
The Gibbs Free Energy of a system is defined as the system's capacity to do work.
True
The hydrolysis of _____ is an exergonic reaction that drives many endergonic reactions in a cell.
ATP
Anabolic pathways of metabolism are pathways that:
build complex molecules from simple ones.
Which of the examples are considered anabolism? (Select all that apply)
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An anabolic reaction decreases entropy within the system because the reaction results in a more ordered macromolecule.
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Synthesis of a protein is an example of a chemical reaction that is:
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Which of the statements describes catabolic reactions?
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Study Notes
Gibbs Free Energy
- Gibbs Free Energy indicates a system's capacity to perform work; it is a measure of the energy available from a thermodynamic system.
- True statement: Gibbs Free Energy can drive reactions in a system.
ATP Hydrolysis
- Hydrolysis of ATP is an exergonic reaction that releases energy, which can drive various endergonic reactions within the cell.
Anabolic Pathways
- Anabolic pathways focus on synthesizing complex molecules from simpler ones, contributing to cellular growth and repair.
- Examples of anabolic processes include:
- Growth of fat cells during periods of plenty.
- Synthesis of new DNA copies before cell division.
Entropy and Anabolism
- Anabolic reactions result in decreased entropy in the system due to the formation of more ordered structures, such as macromolecules.
Chemical Reactions in Metabolism
- Protein synthesis represents an endergonic and anabolic chemical reaction, requiring energy input to build complex proteins.
Catabolic Reactions
- Catabolic reactions are characterized as exergonic, meaning they release energy, and exhibit a negative change in free energy, contributing to the overall energy balance in metabolism.
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Description
Test your knowledge of energy concepts in biology with these flashcards from Biol 1610, Class 23. This quiz covers important topics such as Gibbs Free Energy, ATP hydrolysis, and metabolic pathways. Perfect for pre-class review and study!
