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Problems with entropy in biology.

C J Smith

    Bio Systems
    |October 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Entropy is often seen as a measure of biological order, but this view is complex. This study explores the relationship between entropy, order, and information theory within thermodynamics.

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    Area of Science:

    • Thermodynamics
    • Information Theory
    • Biophysics

    Background:

    • Entropy is commonly interpreted as a measure of disorder in biological systems.
    • The spontaneous creation of order and its relation to entropy requires careful consideration.
    • Existing quantitative methods for order lack integration with thermodynamic principles.

    Purpose of the Study:

    • To critically evaluate the notion of entropy as a measure of biological order.
    • To propose a generalized notation for incorporating measures of biological order into thermodynamic entropy balance equations.
    • To address limitations in current approaches, particularly regarding the meaning and value of information.

    Main Methods:

    • Discussion of the conceptual link between entropy and biological order.

    Related Experiment Videos

  • Analysis of information theory's quantitative approach to order.
  • Development of a general notation for entropy balance equations in biological systems.
  • Identification of challenges in assigning energetic values to measures of order.
  • Main Results:

    • The common interpretation of entropy as biological order is critically examined.
    • Information theory provides quantitative order measures but is disconnected from thermodynamics.
    • A generalized notation is proposed to integrate biological order into thermodynamic entropy balance.
    • Difficulties in assigning energetic equivalents to order and the significance of information's meaning and value are highlighted.

    Conclusions:

    • The relationship between entropy and biological order is nuanced and requires a more integrated thermodynamic framework.
    • Proposed notation offers a path to quantitatively include biological order in entropy balance.
    • Further research is needed to address the energetic and semantic aspects of information in biological systems.