Cytosolic Cytochrome C mediates: (A) Apoptosis, (B) Electron transpo, (C) Krebs cycle, (D) Glycolysis
Answer is A. A i.e. Apoptosis Cytochrome C has two very opposite roles. Within the mitochondrial membrane it serves as electron carrier in oxidative phosphorylation. But when it leaks out into cytosol it combines with Apaf I and activates caspase-9 to mediate apoptosisQ. This dual functioning is known as moonlighting.