What is the pathway of electron transport?
What is the pathway of electron transport?
The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water.
Where does the electron transport chain reaction pathway take?
The electron transport chain activity takes place in the inner membrane and the space between the inner and outer membrane, called the intermembrane space.
What are the four complexes of the electron transport chain?
The electron transport chain (ETC) This feat is accomplished by four integral membrane protein complexes,. NADH-Q oxidoreductase (Complex I) [EC 1.6. 5.3], succinate-Q reductase (Complex II) [EC 1.3. 5.1], quinol–cytochrome-c reductase (Complex III) [EC 1.10.
What happens to electrons in electron transport chain?
In the electron transport chain, electrons are passed from one molecule to another, and energy released in these electron transfers is used to form an electrochemical gradient. Oxygen sits at the end of the electron transport chain, where it accepts electrons and picks up protons to form water.
What are the inputs of the electron transport chain?
The Electron Transport Chain: Mass-Producing ATP
| Process | Location | Input |
|---|---|---|
| Electron Transport Chain (ETC) | Mitochondria (Inner Membrane) | 6 NADH 2 FADH2 |
What are the electron carriers in the electron transport chain?
Coenzyme Q (CoQ) and cytochrome c (Cyt c) are mobile electron carriers in the ETC, and O2 is the final electron recipient.
Which events takes place in the electron transport chain?
The events of the electron transport chain involve NADH and FADH, which act as electron transporters as they flow through the inner membrane space. In complex I, electrons are passed from NADH to the electron transport chain, where they flow through the remaining complexes. NADH is oxidized to NAD in this process.
Why do electrons move down the electron transport chain?
Explanation: The direct purpose of moving electrons down the electron transport chain is to pump protons (hydrogen ions) into the intermembrane space. This creates a chemiosmotic gradient that the cell uses to generate ATP by selectively allowing hydrogen ions to move back into the mitochondrial matrix.
In what order do the electrons move through the electron transport chain?
The electrons must travel through special proteins stuck in the thylakoid membrane. They go through the first special protein (the photosystem II protein) and down the electron transport chain. Then they pass through a second special protein (photosystem I protein).
