One example of an electron carrier in electron transport is

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Coenzyme Q (also known as ubiquinone) is an electron carrier in electron transport. It shuttles electrons between complexes I, II, and III in the electron transport chain, ultimately transferring them to complex IV where they are used to reduce molecular oxygen to water. ATP and GTP are not electron carriers, but rather energy-rich molecules that are produced during electron transport. Citrate is not an electron carrier, but rather an intermediate in the citric acid cycle. Water is not an electron carrier in electron transport, but is a product of the final step in the electron transport chain.

One Example of an Electron Carrier in Electron Transport Is