Could some one explain the correct answer for the question in the drop down box Cells are separated from their environment by a selectively permeable membrane. The membrane allows them to maintain differences in ionic composition between their interior andexterior.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 threetypes of charged particles.Charged Particle Concentration Inside Cell (mM) Concentration Outside Cell (mm)Na+K+A-*1515010015050Encompasses 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 ofIf the membrane were made extremely permeable to A, the inside of the cell would become moreSo, the value of EA, the equilibrium potential of A, is positivezerothe cell when given the chance.negativepositivelycharged relative to the outside of the cell.

1) The concentration of A- ions is higher inside the cell (100 mM) compared to outside the cell (0…

Answered: of EA, the equilibrium potential of A,

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of EA, the equilibrium potential of A,

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 2SQE: One of the important uses of the Nernst equation is in describing the flow of ions across plasma...

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Question

Could some one explain the correct answer for the question in the drop down box

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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