Anaerobic respiration

• Oxygen acts as an acceptor molecule to take up electrons from NADH and FADH2 during cellular respiration.
• The electron transport chain is located on the inner mitochondrial membrane, where it transfers high-energy electrons through a series of protein complexes.
• NAD+ accepts two hydrogen atoms (electrons + protons) from glycolysis or the citric acid cycle, forming NADH.
• FAD accepts two hydrogen atoms (electrons + protons), forming FADH2.
• Electron carriers are proteins that transfer electrons along the electron transport chain.
• Electron carriers transfer high-energy electrons between different stages of the electron transport chain.
• Each stage of the electron transport chain has its own specific electron carrier.