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Cellular Compartment Concentration Quiz

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Questions and Answers

What is the overall process through which living systems acquire and utilize the free energy they need to carry out their various functions?

Metabolism

Why do living organisms require a continuous influx of free energy?

To maintain order in a universe bent on maximizing disorder

What is the role of ATP in the thermodynamics of phosphate compounds?

ATP plays a role in rationalizing the 'energy' in 'high-energy' compounds

Why are living systems not at equilibrium?

Living systems cannot be at equilibrium Signup and view all the answers

What is the main challenge in accurately measuring the concentration of chemical species in specific cellular compartments?

Variation in concentrations by location and time, and difficulty in obtaining accurate measurements Signup and view all the answers

How are bonds with large negative values of G°¿ commonly referred to?

High-energy bonds or energy-rich bonds Signup and view all the answers

What do the symbols A, R, and P represent in the representation of ATP as AR¬P⬃P⬃P?

Adenyl, ribosyl, and phosphoryl groups, respectively Signup and view all the answers

What provides the dominant thermodynamic driving force for the hydrolysis of phosphoanhydrides?

Large negative values of G°¿ Signup and view all the answers

How do phototrophs acquire free energy?

From the sun through photosynthesis Signup and view all the answers

What is the nature of the energy coupling process in living things?

Coupling the exergonic reactions of nutrient oxidation to the endergonic processes required to maintain the living state Signup and view all the answers

How do chemotrophs obtain their free energy?

By oxidizing organic compounds obtained from other organisms Signup and view all the answers

What are the high-energy phosphate compounds used for energy coupling?

Adenosine triphosphate (ATP) Signup and view all the answers