1. NAD+ (Nicotinamide adenine dinucleotide)
* Reduced form: NADH
* Function: Carries electrons from glycolysis and the Krebs cycle to the electron transport chain.
2. FAD (Flavin adenine dinucleotide)
* Reduced form: FADH2
* Function: Carries electrons from the Krebs cycle to the electron transport chain.
3. Ubiquinone (Coenzyme Q)
* Reduced form: Ubiquinol
* Function: A mobile electron carrier within the electron transport chain, shuttling electrons between protein complexes.
4. Cytochromes
* Reduced form: Fe2+ (ferrous)
* Function: A group of proteins containing heme, which is an iron-containing molecule that accepts and donates electrons. They are involved in the electron transport chain.
These electron carriers play a crucial role in cellular respiration by transferring electrons from one molecule to another, ultimately powering the generation of ATP through oxidative phosphorylation.