Passive asymmetric transport through biological membranes

Related Experiment Video

Updated: Aug 8, 2026

Introduction to Solid Supported Membrane Based Electrophysiology
19:56

Introduction to Solid Supported Membrane Based Electrophysiology

Published on: May 11, 2013

J S Schultz

    Biophysical Journal
    |November 1, 1971
    PubMed

    More Related Videos

    Models and Methods to Evaluate Transport of Drug Delivery Systems Across Cellular Barriers18:57

    Models and Methods to Evaluate Transport of Drug Delivery Systems Across Cellular Barriers

    Published on: October 18, 2013

    Demonstration of Membrane Transport of Histidine using Goat Intestinal Inverted Sacs: An Experiential Pedagogical Tool for Undergraduates04:40

    Demonstration of Membrane Transport of Histidine using Goat Intestinal Inverted Sacs: An Experiential Pedagogical Tool for Undergraduates

    Published on: October 4, 2024

    Related Concept Videos

    The Significance of Membrane Transport01:44

    The Significance of Membrane Transport

    The transport of solutes across the cell membrane is essential for metabolic processes, like maintaining cell size and volume, generating the action potential, exchanging nutrients and gases, etc. Membrane transport can be either passive or active. It can be simple diffusion, facilitated, or mediated transport aided by transport proteins such as transporters and channels.
    Transporters facilitate either an active or passive movement of solutes. They can allow a single-molecule transport down its...
    Membrane Asymmetry Regulating Transporters01:19

    Membrane Asymmetry Regulating Transporters

    Enzymes like flippase, floppase, and scramblase transfer phospholipids from one layer to another in the membrane, thereby affecting membrane asymmetry.
    Flippase
    Eukaryotic flippases are type-IV P-type ATPases or P4-ATPases belonging to P-type ATPase family proteins that are membrane-bound pumps involved in the ATP-mediated transport of ions and molecules across the membrane. Flippases flip specific phospholipids from the outer to the inner leaflet of a membrane. All P4-ATPases have one...
    The Significance of Membrane Transport01:44

    The Significance of Membrane Transport

    The transport of solutes across the cell membrane is essential for metabolic processes, like maintaining cell size and volume, generating the action potential, exchanging nutrients and gases, etc. Membrane transport can be either passive or active. It can be simple diffusion, facilitated, or mediated transport aided by transport proteins such as transporters and channels.
    Transporters facilitate either an active or passive movement of solutes. They can allow a single-molecule transport down its...
    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...
    Drug Absorption Mechanism: Carrier-Mediated Membrane Transport01:19

    Drug Absorption Mechanism: Carrier-Mediated Membrane Transport

    Certain large, lipid-insoluble drug molecules that resemble amino acids, peptides, or glucose, require specialized carrier proteins to facilitate their diffusion across cell membranes. This transport can occur through either facilitated diffusion, which does not require energy input, or active transport, which does require energy input.
    Facilitated diffusion is a passive process that utilizes human Solute Carrier (SLC) transporters. These transporters bind to the drug, undergo structural...
    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...