Definition of passive transport
: the movement of substances (as by diffusion) across a cell membrane without the expenditure of energy — compare active transport
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“Passive transport.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/passive%20transport. Accessed 17 Jan. 2022.
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Time Traveler for passive transport
The first known use of passive transport was in 1953
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