Lexic.us

Definition of Passive transport

1. Noun. Transport of a substance across a cell membrane by diffusion; expenditure of energy is not required.

Medical Definition of Passive transport

1. The movement of a substance, usually across a plasma membrane, by a mechanism that does not require metabolic energy. See: active transport, transport protein, facilitated diffusion, ion channels. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Literary usage of Passive transport

Below you will find example usage of this term as found in modern and/or classical literature:

1. Proceedings of the American Philosophical Society Held at Philadelphia for by American Philosophical Society (1901)
"There may be, occasionally, a passive transport by other animals (water fowl), but such cases can only be exceptions and have never been observed. ..."

2. Mineral Tolerance of Animals by National Research Council (U. S.) (2005)
"Calcium absorption can occur by passive transport between epithelial cells across any portion of the digestive tract whenever ionized calcium concentration ..."

3. Exploring the Borderlands: Documents Of The Committee On Common Problems Of by Joe Cain (2004)
"151-160) implies that you consider neither active migration nor passive transport by wind as factors of much importance in the explanation of the ..."

4. Paleobiology of the Williamsburg Formation (Black Mingo Group; Paleocene) of by Albert E. Sanders (1998)
"It seems more likely that this variability resulted from passive transport—"beach washing" or lack of, within subaerial stretches of the delta platform. ..."

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