Does eating decrease the entropy of my body?

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    Body decrease Entropy
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Discussion Overview

The discussion centers around whether living beings use food to decrease their own entropy, exploring the relationship between metabolism, energy consumption, and entropy changes in biological systems.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants propose that living beings consume food to decrease their own entropy, suggesting that the energy stored in food (like ATP) is used to perform work and maintain order within cells.
  • Others argue that the primary reason for eating is to avoid starvation, asserting that changes in entropy are incidental to the process of eating.
  • One participant elaborates that while living organisms may temporarily decrease their entropy through metabolic processes, this is at the expense of increasing the entropy of their surroundings, leading to an overall increase in entropy in accordance with the second law of thermodynamics.
  • Another participant emphasizes that metabolic processes are fundamentally about combating entropy to sustain life, using examples such as ion imbalances across cell membranes that require energy to maintain.

Areas of Agreement / Disagreement

Participants express competing views on the relationship between eating and entropy, with no consensus reached on whether the primary purpose of eating is to decrease entropy or to prevent starvation.

Contextual Notes

Participants present various interpretations of the role of entropy in biological processes, with some focusing on metabolic energy use and others on the necessity of food for survival. The discussion highlights the complexity of these concepts without resolving the underlying questions.

pregunton
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Hello,

Do living beings use food to decrease the entropy of his body?

If so, could anyone explain the process of how we do it? (or at least name a couple of keywords that I can search)

Thank you very much.
 
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No, living things eat to keep from starving to death. Changing entropy is only incidental to the process of eating.
 
pregunton said:
Hello,

Do living beings use food to decrease the entropy of his body?

If so, could anyone explain the process of how we do it? (or at least name a couple of keywords that I can search)

Thank you very much.
Living beings consume food to increase their store of chemical energy. Chemical energy stored in the living cells (mainly in the form of ATP) is a concentrated form of energy so it has low entropy. The living cells then burn that ATP and do useful work with it - like finding and eating more food - that eventually ends of as heat, which results in a dispersal of that once-concentrated chemical energy into the surroundings as heat. This results in an increase in entropy of the surroundings.

AM
 
Yes, living things do use the energy in their food to (temporarily) decrease their own entropy at the expense of increasing the entropy of the surroundings by a larger amount so that the overall effect is (as expected) an increase of entropy). Life forms are constantly using energy to reverse or prevent process that if left unchecked would lead to death. These processes increase entropy (an their reversal decreases it). One example is the imbalance of electrolytes such as chlorine, Sodium, Potassium, across membranes. These imbalances are important for normal cell function and the natural flow of ions, if left unchecked, would restore electrolyte equilibrium increasing entropy and killing the cell (or cells). Cells actively fight against those processes by pumping the ions back to where they belong. These ion pumps consume energy and decrease entropy. This is just a single example among many designed to illustrate the very general fact that the main reason life metabolic processes require energy is because they are often fighting against entropy in order to stay alive.
 
SteamKing said:
No, living things eat to keep from starving to death. Changing entropy is only incidental to the process of eating.

Changing entropy is why eating is required to begin with. It's no incidental.
 

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