Final answer:
In the electron transport chain, membrane-bound electron carriers include flavoproteins, cytochromes, iron-sulfur proteins, and ubiquinone.
Step-by-step explanation:
In the electron transport chain, the membrane-bound electron carriers are flavoproteins, cytochromes, iron-sulfur proteins, and ubiquinone. Flavoproteins include flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD). Cytochrome c is a water-soluble protein that shuttles electrons between complex III and complex IV. Iron-sulfur proteins, such as iron-sulfur clusters, participate in redox reactions. Ubiquinone (coenzyme-Q) is a lipid-soluble molecule that moves freely within the inner mitochondrial membrane.