Question

Electron transport chain
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Answer 1

The electron transport chain is a series of protein complexes that transfer electrons from electron donors to electron acceptors via redox reactions and couples this electron transfer with the transfer of protons across a membrane. The electron transport chain is built up of peptides, enzymes, and other molecules.

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Answer 2

• The electron transport chain is a group of protein complexes that transmit electrons from electron donors to electron acceptors via redox processes (both reduction and oxidation occur simultaneously) and relate this electron transfer with proton (H+ ion) transfer across a membrane.
• The electron transport chain is made up of peptides, enzymes, and other substances.