Question

1. Patch clamp recording of a single ion channel yields the following results: Holding Potential Measured Current (mV)10 -100 (pA) -50 0.0 +50 +100 +2.0 +3.0 A) Draw a graph of the current (on the vertical axis)-voltage relation for this channel. B) What is the electrical resistance (in ohms) of this channel? (keep in mind mV- volt/ampere, i.e. a VIA) C) What is the conductance of this channel in siemens (S)? (keep in mind 1 S 1/ohm). D) What would be the equivalent conductance of 1,000 of these channels opened at the same time?

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