BI-1725
Osmosis
Biology · Secondary 4 · Hard · Osmosis
A student places identical potato strips into three solutions: pure water, 0.3 mol dm⁻³ salt solution and 0.6 mol dm⁻³ salt solution. After 2 hours, which strip will have the greatest increase in length and why?
- The strip in pure water, because water enters the cells by osmosis.
- The strip in pure water, because salt leaves the cells by diffusion.
- The strip in 0.3 mol dm⁻³ salt solution, because water leaves the cells by osmosis.
- The strip in 0.6 mol dm⁻³ salt solution, because water potential is highest there.
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