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Thermodynamics of Membrane Diffusion: Charged Ion definitions

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  • Charged Ion
    Particle with a net positive or negative electrical charge, influencing its movement across membranes due to electrical forces.
  • Cation
    Positively charged particle, often highlighted in membrane diffusion studies for its unique transport properties.
  • Transmembrane Potential
    Difference in electrical charge across a membrane, crucial for determining ion movement direction and energy.
  • Delta Psi
    Symbol representing the voltage difference across a membrane, a key factor in ion transport thermodynamics.
  • Delta G Transport
    Energy change associated with moving ions across a membrane, calculated using both chemical and electrical gradients.
  • Net Charge
    Total electrical charge of an ion, influencing its response to membrane voltage during diffusion.
  • Faraday's Constant
    Physical constant representing the charge of one mole of electrons, used in calculating ion transport energetics.
  • Electrochemical Gradient
    Combined effect of chemical concentration and electrical potential differences driving ion movement across membranes.
  • Chemical Gradient
    Difference in concentration of molecules across a membrane, affecting diffusion direction and rate.
  • Electrical Gradient
    Variation in electrical charge across a membrane, impacting the movement of charged particles.
  • Membrane Channel
    Protein structure facilitating the passage of ions through the membrane, essential for selective diffusion.
  • Joule
    Unit of energy used in thermodynamic calculations, relevant for quantifying ion transport.
  • Coulomb
    Unit of electrical charge, fundamental in expressing Faraday's constant and ion transport equations.