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What is another name for complex I of the Electron Transport Chain (ETC)?

1) NADH dehydrogenase
2) Succinate dehydrogenase
3) Cytochrome c reductase
4) Cytochrome c oxidase

1 Answer

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Final answer:

Complex I of the Electron Transport Chain is also known as NADH dehydrogenase.

Step-by-step explanation:

The other name for Complex I of the Electron Transport Chain (ETC) is NADH dehydrogenase. Complex I is the first enzyme complex in the ETC, also known as NADH-coenzyme Q oxidoreductase. When NADH binds and donates electrons to Complex I, these electrons are initially received by flavin mononucleotide (FMN), subsequently passed through iron-sulfur clusters, and finally transferred to coenzyme Q (ubiquinone), which is then reduced to QH₂. This process ultimately contributes to the generation of a proton gradient used to synthesize ATP via oxidative phosphorylation.

The correct name for complex I of the Electron Transport Chain (ETC) is NADH dehydrogenase. Complex I is the first enzyme complex in the ETC and it is responsible for transferring electrons from NADH to ubiquinone (Q), which is a mobile electron carrier.

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