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Related to passive transport: bulk transport
The movement of a chemical substance across a cell membrane without expenditure of energy by the cell, as in diffusion.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||passive transport - transport of a substance across a cell membrane by diffusion; expenditure of energy is not required|
transport - an exchange of molecules (and their kinetic energy and momentum) across the boundary between adjacent layers of a fluid or across cell membranes
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