## Question about diffusion

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### Question about diffusion

I have a question about diffusion of cells. Why would you expect more of a smaller cell to be diffused in the same period of time than a large cell. Is it just because the smaller ones move faster? And also why would you expect a cell with the same volume as a cubic one, but with a different surface area, to be more diffused than the cubic one?

you mean how quickly some substance will diffuse inside the cell?

It's not about being faster, but being smaller (-> shorter distance). Regarding different shapes, imagine, what's the longest distance from surface to reach each spot inside.

It's not about being faster, but being smaller (-> shorter distance). Regarding different shapes, imagine, what's the longest distance from surface to reach each spot inside.

http://www.biolib.cz/en/main/

*Cis*or*trans*? That's what matters.J = PA (C2-C1)

Where J is the flux due to diffusion, P is a constant, C2-C1 is the concentration difference and A is the area. So the greater the area, the greater the flux due to diffusion, and the more diffusion will occur.

Therefore, in two cells with the same volume, one cubic and one shaped irregularly, the irregularly shaped cell has a higher diffusion flux because it has a greater surface area.

Hope that helps.

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