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of EA, the equilibrium potential of A,

of EA, the equilibrium potential of A,

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Cells are separated from their environment by a selectively permeable membrane. The membrane allows them to maintain differences in ionic composition between their interior and exterior. These differences are apparent in the following table, which describes the intracellular and extracellular environment of a resting excitable cell, such as a neuron, with respect to three types of charged particles. Charged Particle Concentration Inside Cell (mM) Concentration Outside Cell (mm) Na+ K+ A-* 15 150 100 150 5 0 Encompasses all negatively charged organic molecules, including amino acids and nucleic acids. Excludes inorganic ions, including chloride. Based on the A™ concentration gradient, A particles would diffuse ✓ out of If the membrane were made extremely permeable to A, the inside of the cell would become more So, the value of EA, the equilibrium potential of A, is positive zero the cell when given the chance. negative positively charged relative to the outside of the cell.
Transcribed Image Text:Cells are separated from their environment by a selectively permeable membrane. The membrane allows them to maintain differences in ionic composition between their interior and exterior. These differences are apparent in the following table, which describes the intracellular and extracellular environment of a resting excitable cell, such as a neuron, with respect to three types of charged particles. Charged Particle Concentration Inside Cell (mM) Concentration Outside Cell (mm) Na+ K+ A-* 15 150 100 150 5 0 Encompasses all negatively charged organic molecules, including amino acids and nucleic acids. Excludes inorganic ions, including chloride. Based on the A™ concentration gradient, A particles would diffuse ✓ out of If the membrane were made extremely permeable to A, the inside of the cell would become more So, the value of EA, the equilibrium potential of A, is positive zero the cell when given the chance. negative positively charged relative to the outside of the cell.
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