Electron transfer

Definition

Electron transfer is the movement of electrons from one molecule to another, playing a crucial role in energy production during cellular respiration.

5 Must Know Facts For Your Next Test

1. Electron transfer occurs in the electron transport chain (ETC) within the mitochondria.
2. It is essential for the production of ATP through oxidative phosphorylation.
3. NADH and FADH2 donate electrons to the ETC, which are then passed through a series of protein complexes.
4. The energy released during electron transfer is used to pump protons across the mitochondrial membrane, creating a proton gradient.
5. Oxygen acts as the final electron acceptor, forming water at the end of the ETC.

Review Questions

• What role does electron transfer play in ATP production?
• Which molecules donate electrons to the electron transport chain?
• How does oxygen function in the process of electron transfer?

Related terms

Oxidative Phosphorylation:

A process where ATP is formed as electrons are transferred through the electron transport chain.

NADH:

An electron carrier that donates electrons to the electron transport chain.

Proton Gradient:

A difference in proton concentration across a membrane, generated by electron transfer and used to produce ATP.