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Questions and Answers
Which molecule is commonly used as an energy source in biological reactions?
Which molecule is commonly used as an energy source in biological reactions?
- ATP (correct)
- AMP
- ADP
- ADP-ribose
What is the overall process of coupling exergonic and endergonic reactions in biology called?
What is the overall process of coupling exergonic and endergonic reactions in biology called?
- Thermodynamic coupling
- Energy coupling (correct)
- Chemical coupling
- Metabolic coupling
Which type of reactions are thermodynamically unfavorable and require energy input?
Which type of reactions are thermodynamically unfavorable and require energy input?
- Exergonic reactions
- Endergonic reactions (correct)
- Catabolic reactions
- Redox reactions
What is the sum of the change in Gibbs free energy ((\Delta G)) for a coupled exergonic and endergonic reaction?
What is the sum of the change in Gibbs free energy ((\Delta G)) for a coupled exergonic and endergonic reaction?
What is the role of ATP in driving biological reactions?
What is the role of ATP in driving biological reactions?
Which molecule is commonly used as an energy source in biological reactions?
Which molecule is commonly used as an energy source in biological reactions?
What is the overall process of coupling exergonic and endergonic reactions in biology called?
What is the overall process of coupling exergonic and endergonic reactions in biology called?
What is the sum of the change in Gibbs free energy ((\Delta G)) for a coupled exergonic and endergonic reaction?
What is the sum of the change in Gibbs free energy ((\Delta G)) for a coupled exergonic and endergonic reaction?
Which type of reactions are thermodynamically unfavorable and require energy input?
Which type of reactions are thermodynamically unfavorable and require energy input?
What is the role of ATP in driving biological reactions?
What is the role of ATP in driving biological reactions?
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Study Notes
Energy Sources and Reactions
- ATP (adenosine triphosphate) is the primary energy currency molecule utilized in biological reactions.
- Endergonic reactions are thermodynamically unfavorable and require energy input to proceed.
- Exergonic reactions release energy, making them thermodynamically favorable.
- Coupling is the process of linking an exergonic reaction with an endergonic reaction to drive the endergonic reaction forward.
- The sum of the change in Gibbs free energy ((\Delta G)) for a coupled exergonic and endergonic reaction is zero. This means that the energy released by the exergonic reaction is used to drive the endergonic reaction.
- ATP plays a crucial role in driving biological reactions by providing the energy needed for endergonic processes like muscle contraction, protein synthesis, and active transport.
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