(b) The actual resting membrane potential of the cell is not only dependent on the individual components calculated above, but also relates to the overall permeability of the cell membrane to each of the ion types. It turns out that the majority of the total resting membrane potential for a cell (Atotal) is derived from the movement of K+ ions, accounting for ~90% of the total potential. In contrast the contribution from Na+ is ~ 1%, Ca2+ is ~1%, and for Cl- is ~8%. Given these values, and the individual A values calculated in part (a), estimate the overall membrane resting potential.

(b) The actual resting membrane potential of the cell is not only dependent on the individual components calculated above, but also relates to the overall permeability of the cell membrane to each of the ion types. It turns out that the majority of the total resting membrane potential for a cell (Atotal) is derived from the movement of K+ ions, accounting for ~90% of the total potential. In contrast the contribution from Na+ is ~ 1%, Ca2+ is ~1%, and for Cl- is ~8%. Given these values, and the individual A values calculated in part (a), estimate the overall membrane resting potential.

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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