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Unformatted text preview: avogadro's number of particles per liter), how many total potassium ions are inside the cell? Remember there are 1000 cm 3 /liter. Answer 2.52E+11 Question 3 Assume a cell has a membrane resistance of 10,000 Ohms cm 2 and a capacitance of 1F/cm 2 . What is the time constant in ms? Answer 10 Question 4 If the membrane potential in response to a step current injection is as follows: V(t) = 30mV et/2ms40mV then at what value of t will the voltage have risen 99% of the way from rest to its asymptotic value? Answer 9.21...
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 Spring '06
 Mel

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