What feature of cytochromes makes them valuable in electron transport systems?
A) aspartate residues in the active site
B) the porphyrin ring
C) the multiple α-helices
D) the iron ion

Question

Quizplus · Accepted Answer

The iron ion in cytochromes is what makes them valuable in electron transport systems. The iron ion can exist in both the +2 and +3 oxidation states, which allows it to accept and donate electrons. This makes cytochromes ideal for transferring electrons between different molecules in the electron transport chain.

What Feature of Cytochromes Makes Them Valuable in Electron Transport