[PDF] concept of free energy in bioenergetics

Free energy in bioenergetics is the amount of energy that is capable of doing work; the amount of available energy. It has a simple calculation. The change in free energy = change in enthalpy - (temperature times change in entropy). Temperature unit is Kelvin in this equation.
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  • What is the concept of free energy?

    free energy, in thermodynamics, energylike property or state function of a system in thermodynamic equilibrium.
    Free energy has the dimensions of energy, and its value is determined by the state of the system and not by its history.
    Free energy is used to determine how systems change and how much work they can produce.

  • What is the concept of free energy in a biochemical reaction?

    For biochemical reactions, the standard free-energy change is usually expressed as ?G°?, which is the standard free-energy change of a reaction in aqueous solution at pH= 7, approximately the conditions within a cell.

  • What are the basic concepts of bioenergetics?

    Bioenergetics is the flow of energy a biological system, and describes the conversion of macronutrients (carbs, protein, fat, which all contain chemical energy) into micronutrients (glucose, ATP) that can be used for energy.
    The energy is harvested from the breakdowns of chemical bonds within the macronutrients.

  • What are the basic concepts of bioenergetics?

    The energy that cells can and must use is free energy, described by the Gibbs free-energy function G, which allows prediction of the direction of chemical reactions, their exact equilibrium position, and the amount of work they can perform at constant temperature and pressure.

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