Related Experiment Video

Updated: Aug 23, 2026

Introduction to Solid Supported Membrane Based Electrophysiology
19:56

Introduction to Solid Supported Membrane Based Electrophysiology

Published on: May 11, 2013

Influence of membrane heterogeneity on kinetics of nonelectrolyte tracer flows

J H Li, A Essig

    The Journal of Membrane Biology
    |November 22, 1976
    PubMed

    More Related Videos

    Application of Electrophysiology Measurement to Study the Activity of Electro-Neutral Transporters11:51

    Application of Electrophysiology Measurement to Study the Activity of Electro-Neutral Transporters

    Published on: February 3, 2018

    The Diffusion of Passive Tracers in Laminar Shear Flow08:01

    The Diffusion of Passive Tracers in Laminar Shear Flow

    Published on: May 1, 2018

    Related Concept Videos

    Facilitated Transport01:19

    Facilitated Transport

    The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In facilitated transport, also known as facilitated diffusion, molecules and ions travel across a membrane via...
    Protein Diffusion in the Membrane01:24

    Protein Diffusion in the Membrane

    Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...
    Facilitated Transport01:19

    Facilitated Transport

    The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In  facilitated transport, also known as facilitated diffusion, molecules and ions travel across a membrane via...
    Drug Absorption Mechanism: Passive Membrane Transport01:23

    Drug Absorption Mechanism: Passive Membrane Transport

    Passive transport is a method of drug absorption where small, lipid-soluble drugs can move across the cell membrane. This movement happens along the concentration gradient, which is a natural flow from higher to lower concentration areas. The speed at which the drug moves is directly related to its lipid–water partition coefficient. This means that the more a drug dissolves in lipids, the faster it diffuses or spreads throughout the body. It is important to note that most drugs are either weak...
    Facilitated Diffusion01:16

    Facilitated Diffusion

    The plasma membrane, a critical structure in cellular biology, houses an array of transporters, or carrier proteins, interspersed within its lipid bilayer. These proteins play a crucial role in solute transport through facilitated diffusion, a form of passive diffusion that uses transporters to move the molecules across the membrane.
    In this process, substrates such as organic compounds and ions interact with a transporter on one side, triggering conformational changes in proteins that enable...
    Physiological Pharmacokinetic Models: Blood Flow-Limited Versus Diffusion-Limited Models00:57

    Physiological Pharmacokinetic Models: Blood Flow-Limited Versus Diffusion-Limited Models

    Physiological pharmacokinetic models, often called flow-limited or perfusion models, typically assume a swift drug distribution between tissue and venous blood, creating a rapid drug equilibrium. This premise is based on the idea that drug diffusion is extremely fast, and the cell membrane presents no barrier to drug permeation. In this scenario, where no drug binding occurs, the drug concentration in the tissue equals that of the venous blood leaving the tissue. This greatly simplifies the...