Part of the energy producting structure which contains the cytochrome system. Solution protein containing heme that participates in the phase of biochemical respiration called oxidative phosphorylation . Cytochromes act as carriers of hydride ions Any of a group of proteins that carry as prosthetic groups various iron porphyrins called hemes. Hemes also constitute prosthetic groups for other proteins, but the function of prosthetic groups in the cytochromes is largely restricted to oxidation to the ferric heme, with the iron in the 3+ valence state, and reduction to ferrous heme with a 2+ iron. Thus, by alternate oxidation and reduction the cytochromes can transfer electrons to and from each other and other substances, and can operate in the oxidation of substrates. The energy released in their oxidation reactions is conserved by using it to drive the formation of the energy-rich compound adenosine triphosphate (ATP) from adenosine diphosphate (ADP) and inorganic phosphate. This process of coupling the oxidation of substrates to phosphorylation of ADP is called oxidative phosphorylation. In cells of eukaryotic organisms, the cytochromes have rather uniform properties; they are part of the respiratory chain and are located in the mitochondria. In contrast, prokaryotes exhibit much more varied cytochromes. Cytochromes are found even in metabolic pathways that employ oxidants other than oxygen..

1. Part of the energy producting structure which contains the cytochrome system.
Solution
protein containing heme that participates in the phase of biochemical respiration called oxidative
phosphorylation
. Cytochromes act as carriers of hydride ions
Any of a group of proteins that carry as prosthetic groups various iron porphyrins called hemes.
Hemes also constitute prosthetic groups for other proteins, but the function of prosthetic groups
in the cytochromes is largely restricted to oxidation to the ferric heme, with the iron in the 3+
valence state, and reduction to ferrous heme with a 2+ iron. Thus, by alternate oxidation and
reduction the cytochromes can transfer electrons to and from each other and other substances,
and can operate in the oxidation of substrates. The energy released in their oxidation reactions is
conserved by using it to drive the formation of the energy-rich compound adenosine triphosphate
(ATP) from adenosine diphosphate (ADP) and inorganic phosphate. This process of coupling the
oxidation of substrates to phosphorylation of ADP is called oxidative phosphorylation. In cells of
eukaryotic organisms, the cytochromes have rather uniform properties; they are part of the
respiratory chain and are located in the mitochondria. In contrast, prokaryotes exhibit much more
varied cytochromes. Cytochromes are found even in metabolic pathways that employ oxidants
other than oxygen.