The Electron Transport Chain Contains Four Large Protein Complexes (I

question 72

Multiple Choice

The electron transport chain contains four large protein complexes (I, II, III, and IV) plus cytochrome c and ubiquinone.One function of these components is to

• A) sequester electrons.
• B) ensure the production of H₂O from O₂.
• C) regulate the passage of protons through the chain.
• D) synthesize ATP.
• E) transport protons across the membrane.