electron transport

noun

: the sequential transfer of electrons especially by cytochromes in cellular respiration from an oxidizable substrate to molecular oxygen by a series of oxidation-reduction reactions

Examples of electron transport in a Sentence

Recent Examples on the Web
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Without it, the electron transport chain stalls, ATP production collapses and cells are forced into anaerobic glycolysis. Scott Travers, Forbes.com, 14 Jan. 2026 And oxygen is required to run the molecular conveyor belt (the electron transport chain, or ETC) that moves electrons, so the more oxygen being consumed, the more efficiently this runs. New Atlas, 11 Aug. 2025 For example, this can be seen in the novel bacteria’s cytochrome, a type of protein involved in electron transport. Ritsuko Kawai, Wired News, 5 May 2025 Research has shown that anthocyanins work to divert and store excess light and UV radiation from excited electron transport chains. Christian Thorsberg, Discover Magazine, 28 Oct. 2021 Cyanide attacks the very cells that make life possible, specifically the mitochondria and its electron transport chain. Meg Neal, Popular Mechanics, 4 Oct. 2020 When heat is applied, electrons in the semiconductor are thermally excited and rise from a low-energy state to a high-energy state, and are injected into the electron transport layer. IEEE Spectrum, 29 July 2019

Word History

First Known Use

1951, in the meaning defined above

Time Traveler
The first known use of electron transport was in 1951

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Cite this Entry

“Electron transport.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electron%20transport. Accessed 14 Feb. 2026.

Medical Definition

electron transport

noun
: the sequential transfer of electrons especially by cytochromes in cellular respiration from an oxidizable substrate to molecular oxygen by a series of oxidation-reduction reactions
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