Question

Which complex of ETS has both iron and copper?

Answer 1

Solution:- Complex IV or cytochrome c oxidase has both iron and copper.

1. It contains cytochrome a and a3, two heme, and two copper centers.
2. Complex IV receives electrons from cytochrome c, which is a mobile carrier and transfers electrons from complex III to IV.
3. Complex IV transfers electrons to O2. Oxygen acts as a final electron acceptor and accepts two hydrogen ions to produce water.