transport of a substance across a cell membrane by diffusion; expenditure of energy is not required
Passive transport is a movement of biochemicals and other atomic or molecular substances across membranes. Unlike active transport, it does not require an input of chemical energy, being driven by the growth of entropy of the system. The rate of passive transport depends on the permeability of the cell membrane, which, in turn, depends on the organization and characteristics of the membrane lipids and proteins. The four main kinds of passive transport are diffusion, facilitated diffusion, filtration and osmosis.
The numerical value of passive transport in Chaldean Numerology is: 9
The numerical value of passive transport in Pythagorean Numerology is: 7
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"passive transport." Definitions.net. STANDS4 LLC, 2017. Web. 21 Oct. 2017. <http://www.definitions.net/definition/passive transport>.