Process
Passive Membrane transport
Passive membrane transport
Movement across a membrane down a concentration or electrochemical gradient without direct energy input from ATP hydrolysis.
Overview
EXPLORE BY LEVELSome molecules move across a membrane from where they are more concentrated toward where they are less concentrated. Channels and carriers can help substances that cannot cross the membrane easily on their own.
Quick Facts
AT A GLANCEExplore nextCell biology
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Recommended Reading
Trusted references for learning more about Passive Membrane transport.
Research Claims
Transport direction depends on electrochemical potential, not concentration alone for charged solutes. Permeability, membrane composition, and transporter kinetics determine rates.