Find the charge on the surface of the membrane

Reference no: EM13682580

A model of a red blood cell portrays the cell as a spherical capacitor, a positively charged liquid sphere of surface area A separated from the surrounding negatively charged fluid by a membrane of thickness t. Tiny electrodes introduced into the interior of the cell show a potential difference of 100 mV across the membrane. The membrane's thickness is estimated to be 99 nanometer and has a dielectric constant of 5.00.

(a) If an average red blood cell has a mass of 1e-12 kilogram, compute the volume of the cell and thus find its surface area. The density of blood is 1100 kg/m3.

Volume=____________________ m^3

Surface Area=__________________m^2

(b) Compute the capacitance of the cell by assuming the membrane surfaces act as parallel plates.

____________________ F

_________________________C

(d) Determine how many electronic (elementary) charges does the surface charge represent?

Reference no: EM13682580

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