Final answer:
Cytochromes have heme as part of their prosthetic group in the electron transport chain.
Step-by-step explanation:
The carrier molecule in the electron transport chain that has heme as part of its prosthetic group is cytochromes. Cytochrome c is a water-soluble protein that carries electrons between complex III and complex IV in the electron transport chain. The heme group in cytochrome c contains iron, which undergoes oxidation and reduction as it passes electrons.