Does the rate of diffusion change over time Does the rate o
 Does the rate of diffusion change over time ? 
 
  Does the rate of diffusion change over time ? 
 
 Solution
Yes, the rate of diffusion does change over time.
The size of the diffusing particle, the mass of the particle, the surface area and the temperature are the factors controlling the rate of diffusion.
In cells, the size of the cell affects the rate of diffusion. The surface area to volume ratio affects the rate of diffusion. As the cell grows in size, its surface area to volume decreases and it takes a longer time for molecules to diffuse in and out of the cell. As all cells grow, the rate of diffusion will change over time.

