imagine that a scientific team found a eukaryotic organism living on the ocean floor near the south pole. the extremely cold temperature of the water prevents it from holding much oxygen, but there is a constant stream of sulfur leaking from the sea floor. sulfur has a high affinity for electrons and can react with hydrogen in ways similar to oxygen. after conducting research, the scientists found that the mitochondria within these organisms performed a process very similar to oxidative phosphorylation. based on this information, what would be the best hypothesis regarding metabolism in this new organism?