Time required to diffuse to the membrane change
A small molecule is produced in the center of a spherical cell and diffuses to the cell membrane. If the cell were to triple its radius, by what factor would the time required to diffuse to the membrane change?
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Assuming that the permeability of the membrane remains constant, what fraction of the cell's requirement of this nutrient are being met by diffusion after adhering to the surface?
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While riding on a Ferris wheel at the state fair, you are seated 10 m from the axis. If you make a complete rotation every minute, what is your linear speed?
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