Essential Cell Biology (Fourth Edition)
Essential Cell Biology (Fourth Edition)
4th Edition
ISBN: 9780815345251
Author: Bruce Alberts, Dennis Bray, Karen Hopkin, Alexander D. Johnson, Julian Lewis, Martin Raff, Keith Roberts, Peter Walter
Publisher: W. W. Norton & Company
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Chapter 12, Problem 5Q
Summary Introduction

To calculate: The equilibrium membrane potential of K+ and Na+ where there would be no net movement of the ion throughout the plasma membrane.

Introduction: The force that influences to drive an ion across a membrane is made up of two components; one is due to the electrical membrane potential and another is due to the concentration gradient of the ion. At equilibrium constant, two forces of the membrane that is the intracellular force and extra cellular force are balanced and havea simple mathematical relationship known as Nernst equation. Membrane potential of the biological cell refers to the difference in the electric potential between the interior of the cell concentration and the exterior cell concentration.

Summary Introduction

To explain: The membrane potential of animal cell at resting condition.

Introduction: The force that influences to drive an ion across a membrane is made up of two components; one is due to the electrical membrane potential and another is due to the concentration gradient of the ion. At equilibrium constant, two forces of the membrane that is the intracellular force and extra cellular force are balanced and havea simple mathematical relationship known as Nernst equation. Membrane potential of the biological cell refers to the difference in the electric potential between the interior of the cell concentration and the exterior cell concentration.

Summary Introduction

To explain: The changing in membrane if a large number of Na+ channels suddenly opened by making the membrane more permeable to Na+.

Introduction: The force that influences to drive an ion across a membrane is made up of two components; one is due to the electrical membrane potential and another is due to the concentration gradient of the ion. At equilibrium constant, two forces of the membrane that is the intracellular force and extra cellular force are balanced and have a simple mathematical relationship known as Nernst equation. Membrane potential of the biological cell refers to the difference in the electric potential between the interior of the cell concentration and the exterior cell concentration.

Summary Introduction

To explain: The changes in membrane ifthe Na+ channels are closed again.

Introduction: The force that influences to drive an ion across a membrane is made up of two components; one is due to the electrical membrane potential and another is due to the concentration gradient of the ion. At equilibrium constant, two forces of the membrane that is the intracellular force and extra cellular force are balanced and have a simple mathematical relationship known as Nernst equation. Membrane potential of the biological cell refers to the difference in the electric potential between the interior of the cell concentration and the exterior cell concentration.

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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license