Question

An iron-containing red protein is ______ 

Options

• Cytochrome b6

• Plastocyanin

• Ferredoxin

• Cytochrome - f

Answer 1

An iron-containing red protein is Ferredoxin.

Explanation:

Iron-containing red pigment is Ferredoxin which is present as electron carriers in various metabolic pathways. Cytochromes are Fe containing redox-active proteins involved in the electron transport chain and redox catalysis. Plastocyanin is a Cu-containing pigment associated with the electron transport system in photosynthesis.