The pressure inside a cell is determined by the thermal motion (diffusion) of th

Question

The pressure inside a cell is determined by the thermal motion (diffusion) of the proteins, chemicals, and water inside. A cell's volume increases suddenly by a factor of two. Assume that the change is so fast, that the cell does not have time to open ion channels to equilibrate the water and ions in the cell (ie. the forces due to the molecules are the same before and after).

What is the change in the pressure on the cell membrane? Assume the cell is a perfectly round sphere.

A) Pressure will increase by 63%

B) Pressure will increase by 37%

C) Pressure will decrease by 63%

D) Pressure will decrease by 37%

Explanation / Answer

B) Pressure will increase by 37%

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