The capacitance of biological membranes is about 1.0 μF per cm2 of membrane area, so investigators can determine the surface area of a cell membrane by using intracellular electrodes to measure the membrane’s capacitive reactance. An investigator applies a 1.0 μA peak current at 40 kHz to a cell and measures the peak out-of-phase voltage—that is, the component of the voltage due to the capacitive reactance of the cell membrane—to be 0.16 V. If the capacitance of a cell membrane is measured to be 6.0 x 10-11 F, what is the area?A. 6.0 x 10-13 m2B. 6.0 x 10-11 m2C. 6.0 x 10-9 m2D. 6.0 x 10-7 m2
The capacitance of biological membranes is about 1.0 μF per cm2 of membrane area, so investigators can determine the surface area of a cell membrane by using intracellular electrodes to measure the membrane’s capacitive reactance. An investigator applies a 1.0 μA peak current at 40 kHz to a cell and measures the peak out-of-phase voltage—that is, the component of the voltage due to the capacitive reactance of the cell membrane—to be 0.16 V. If the capacitance of a cell membrane is measured to be 6.0 x 10-11 F, what is the area?A. 6.0 x 10-13 m2B. 6.0 x 10-11 m2C. 6.0 x 10-9 m2D. 6.0 x 10-7 m2
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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The capacitance of biological membranes is about 1.0 μF per cm2 of membrane area, so investigators can determine the surface area of a cell membrane by using intracellular electrodes to measure the membrane’s capacitive reactance. An investigator applies a 1.0 μA peak current at 40 kHz to a cell and measures the peak out-of-phase voltage—that is, the component of the voltage due to the capacitive reactance of the cell membrane—to be 0.16 V.
If the capacitance of a cell membrane is measured to be 6.0 x 10-11 F, what is the area?
A. 6.0 x 10-13 m2
B. 6.0 x 10-11 m2
C. 6.0 x 10-9 m2
D. 6.0 x 10-7 m2
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