& BIO Current across membrane wall of axon An axon cable that connects the input and output ends of a human nerve cell is
, and there is a 0.070-V potential difference across the membrane. (a) Determine the current through the membrane. (b) If the current is due to sodium ions, how many of these ions leak across the membrane wall per second? (c) How does the current change if the membrane is twice as thick?
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