Question

What is considered part of the electron transport system?

Answer 1

Electron Transport System:

1. Electron Transport System occurs in the cristae of mitochondria.
2. Electron Transport System is a series of protein complexes and organic molecules where electrons are transferred from one complex to another through a series of redox reactions.
3. The energy released in this transfer is coupled with proton gradients and is used to create ATP as well as oxidative phosphorylation.
4. The Electron Transport System contains four major complexes which are-

Complex I - also known as ubiquinone oxidoreductase.

Complex II - also known as succinate dehydrogenase

Complex III - also known as cytochrome c reductase

Complex IV - cytochrome c oxidase

5. Along with these four complexes. ETC also contains two diffusible electron carriers - ubiquinone and cytochrome C.