Physical Foundations of Biochemistry Quiz
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Questions and Answers

Which type of system is an organism that maintains a constant composition in completely changing environments?

  • Isolated system
  • Open system (correct)
  • Closed system
  • Reversible system
  • What is the degree of disorder or randomness in a system known as?

  • Enthalpy
  • Heat
  • Entropy (correct)
  • Internal energy
  • In which type of system does the state change when one of its properties is altered?

  • Closed system
  • Isolated system (correct)
  • Reversible system
  • Open system
  • What type of energy transfer occurs when two bodies in contact with different temperatures exchange energy?

    <p>Heat</p> Signup and view all the answers

    Which law should apply whether the laws of thermodynamics are inside or outside a living organism?

    <p>Laws of thermodynamics</p> Signup and view all the answers

    What is the process by which cells continuously consume energy to maintain their living state and allow synthesis of macromolecules?

    <p>Bioenergetics</p> Signup and view all the answers

    Which compound is an endergonic process that requires the coupling to hydrolysis of ATP to supply energy?

    <p>Proteins</p> Signup and view all the answers

    What is the potential phosphoryl group donor stored by bacteria, especially those with spores?

    <p>PolyP</p> Signup and view all the answers

    Which type of interactions are responsible for the attraction due to induced dipoles?

    <p>London interactions</p> Signup and view all the answers

    In fluorescence spectroscopy, what does a negative hydropathy index indicate about a biomolecule?

    <p>It is hydrophobic and likely membrane-bound</p> Signup and view all the answers

    Study Notes

    Homeostasis and Systems

    • An organism that maintains a constant composition in completely changing environments is a homeostatic system.

    Thermodynamics

    • The degree of disorder or randomness in a system is known as entropy.
    • A closed system is one where the state changes when one of its properties is altered.

    Energy Transfer

    • Energy transfer that occurs when two bodies in contact with different temperatures exchange energy is heat transfer.

    Laws of Thermodynamics

    • The laws of thermodynamics apply whether inside or outside a living organism.

    Cellular Processes

    • The process by which cells continuously consume energy to maintain their living state and allow synthesis of macromolecules is called cellular metabolism.

    Energetics

    • Peptidoglycan synthesis is an endergonic process that requires the coupling to hydrolysis of ATP to supply energy.

    Energy Storage

    • Polyphosphate is the potential phosphoryl group donor stored by bacteria, especially those with spores.

    Intermolecular Forces

    • London dispersion forces are responsible for the attraction due to induced dipoles.

    Fluorescence Spectroscopy

    • A negative hydropathy index in fluorescence spectroscopy indicates a hydrophilic region in a biomolecule.

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    Description

    Test your knowledge of the physical foundations of biochemistry with this quiz. Explore concepts such as vitalism, the laws of thermodynamics, and the equilibrium of organisms in changing environments.

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