Correct sequence in electron acceptors in ATP synthesis is

The correct sequence in electron acceptors in ATP synthesis is Cyt b, c, a, a₃.
Cytochromes are proteins that contain heme as their prosthetic group and whose principal biological function, in the cells of animals, plants, and microorganisms, is electron transport.
The mobile cytochrome electron carrier in mitochondria is cytochrome c. The sequence of the movement of the electrons includes cytochromes b, cytochrome c, cytochrome a and cytochrome a₃.