The Electron Transport Chain: Complex IV

The video tutorial explains the roles of cytochrome C reductase (complex 3) and cytochrome C oxidase (complex 4) in the electron transport chain. It details the electron path from cytochrome C to cytochrome C oxidase, the reduction of oxygen to water, and the proton pumping process. The tutorial also discusses inhibitors like cyanide and carbon monoxide, which affect cytochrome C oxidase, and emphasizes the importance of oxygen as the final electron acceptor. It highlights the interdependence of the respiratory chain complexes and the consequences of inhibiting any of them.

Explain how carbon monoxide affects cytochrome C oxidase.

What role does oxygen play in the mitochondrial respiratory chain?

What happens to the electron transport chain if one of the complexes is inhibited?