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Cytochrome is : -
A
Metallo flavo protein
B
Fe containing porphyrin pigment
C
Glycoprotein
D
Lipid
Detailed Solution
Cytochromes are electron carrier proteins of the electron transport chain in mitochondria and chloroplasts.
Each contains a haem group: an iron (Fe) atom held in a porphyrin ring. The iron changes between $Fe^{3+}$ and $Fe^{2+}$ as it accepts and donates electrons.
So a cytochrome is an Fe-containing porphyrin pigment.
Each contains a haem group: an iron (Fe) atom held in a porphyrin ring. The iron changes between $Fe^{3+}$ and $Fe^{2+}$ as it accepts and donates electrons.
So a cytochrome is an Fe-containing porphyrin pigment.