Biology for IGCSE & O level - Movement Into And Out Of Cells (Section 5 - No. 17)
How does surface area affect the rate of diffusion?
A larger surface area decreases the rate of diffusion.
A larger surface area increases the rate of diffusion.
Surface area does not affect the rate of diffusion.
Surface area only affects diffusion if a semi-permeable membrane is present.
Explanation
A larger surface area provides more space for molecules to diffuse, thus increasing the rate of diffusion.
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