How bacterial use nanowires
Electricity carried on nanowires may be a lifeline. Bacteria respire by losing electrons to an acceptor — for Shewanella, a metal such as iron. (Breathing is a special case: Humans respire by giving up electrons to oxygen, one of the most powerful electron acceptors.) Nealson said of Shewanella: “If you don’t give it an electron acceptor, it dies. It dies pretty rapidly.”
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