This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Cytosolic Cytochrome C mediates \nSelect and explain. \nA. Apoptosis, B. Electron transpo, C. Krebs cycle, D. Glycolysis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 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.', 'role': 'assistant'}]