imported>Themidget17: /* Facilitated diffusion and transport */ corrected the term and the link (facilitated transport and facilitated diffusion are the same thing)

2025-12-26T21:53:13Z

Facilitated diffusion and transport: corrected the term and the link (facilitated transport and facilitated diffusion are the same thing)

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imported>Aleckj168 at 00:08, 28 June 2025

2025-06-28T00:08:35Z

← Previous revision		Revision as of 00:08, 28 June 2025
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	'''Membrane potential''' (also '''transmembrane potential''' or '''membrane voltage''') is the difference in [[electric potential]] between the interior and the exterior of a biological [[Cell (biology)\|cell]]. It equals the interior potential minus the exterior potential. This is the energy (i.e. [[Work (physics)\|work]]) per charge which is required to move a (very small) positive charge at constant velocity across the [[cell membrane]] from the exterior to the interior. (If the charge is allowed to change velocity, the change of [[kinetic energy]] and production of [[Larmor formula\|radiation]]<ref>{{cite book\|last1=Bohm \|first1=David \|author-link=David Bohm \|year=1989 \|orig-date=1951 \|title=Quantum Theory \|publisher=Prentice-Hall \|location=New York \|edition=Dover reprint \|isbn=978-0-486-65969-5 \|oclc=1103789975 \|page=38}}</ref> must be taken into account.)		'''Membrane potential''' (also '''transmembrane potential''' or '''membrane voltage''') is the difference in [[electric potential]] between the interior and the exterior of a biological [[Cell (biology)\|cell]]. It equals the interior potential minus the exterior potential. This is the energy (i.e. [[Work (physics)\|work]]) per charge which is required to move a (very small) positive charge at constant velocity across the [[cell membrane]] from the exterior to the interior. (If the charge is allowed to change velocity, the change of [[kinetic energy]] and production of [[Larmor formula\|radiation]]<ref>{{cite book\|last1=Bohm \|first1=David \|author-link=David Bohm \|year=1989 \|orig-date=1951 \|title=Quantum Theory \|publisher=Prentice-Hall \|location=New York \|edition=Dover reprint \|isbn=978-0-486-65969-5 \|oclc=1103789975 \|page=38}}</ref> must be taken into account.)

	Typical values of membrane potential, normally given in units of [[milli]] [[volt]]s and denoted as mV, range from −80 mV to −40 mV. For such typical negative membrane potentials, positive work is required to move a positive charge from the interior to the exterior. However, [[Thermal energy\|thermal kinetic energy]] allows ions to overcome the potential difference. For a selectively permeable membrane, this permits a net flow against the gradient. This is a kind of [[osmosis]].		Typical values of membrane potential, normally given in units of [[milli]] [[volt]]s and denoted as mV, range from −80 mV to −40 mV, being the negative charges the usual state of charge and through which occurs phenomena based in the transit of positive charges ([[cations]]) and negative charges ([[anions]]). For such typical negative membrane potentials, positive work is required to move a positive charge from the interior to the exterior. However, [[Thermal energy\|thermal kinetic energy]] allows ions to overcome the potential difference. For a selectively permeable membrane, this permits a net flow against the gradient. This is a kind of [[osmosis]].

	==Description==		==Description==

imported>ZergTwo: Restored revision 1292267976 by OAbot (talk): Your edits created issues involving MOS:LINK.

2025-05-29T04:08:01Z

Restored revision 1292267976 by OAbot (talk): Your edits created issues involving MOS:LINK.

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Membrane potential - Revision history

imported>Themidget17: /* Facilitated diffusion and transport */ corrected the term and the link (facilitated transport and facilitated diffusion are the same thing)

imported>Aleckj168 at 00:08, 28 June 2025

imported>ZergTwo: Restored revision 1292267976 by OAbot (talk): Your edits created issues involving MOS:LINK.