Answer:
Just look at my explanation you will find the answer :)
Explanation:
Electron transfer in the ETC is coupled to proton transfer from the matrix to the intermembrane space.
-Prosthetic groups, such as iron-sulfur centers, are directly involved with electron transfer.
- The outer membrane of mitochondria is readily permeable to small molecules and hydrogen ions.
-Electron carriers are organized into four complexes of proteins and prosthetic groups.
-Electron carriers in the ETC include ubiquinone (coenzyme Q) and cytochrome c.
