BI-544
Diffusion
Biology · Secondary 3 · Hard · Diffusion
A cube of agar with a surface area to volume ratio of 4:1 takes 40 s for a dye to reach its centre. A similar cube with a surface area to volume ratio of 2:1 is used. Assuming the same conditions, what will happen to the time taken for the dye to reach its centre?
- The time will be shorter than 40 s because diffusion is faster.
- The time will be longer than 40 s because diffusion is slower.
- The time will remain exactly 40 s because cube size does not matter.
- The time cannot be predicted because diffusion is random.
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