BI-574
Osmosis
Biology · Secondary 3 · Hard · Osmosis
A potato strip is placed in a 0.25 mol dm⁻³ salt solution for 30 minutes. Its length decreases. Which statement best explains this change in terms of osmosis?
- Water moves from the salt solution into the potato cells, causing them to swell.
- Water moves from the potato cells into the salt solution, causing the cells to shrink.
- Salt moves from the solution into the potato cells, making them longer.
- Salt moves from the potato cells into the solution, so the cells lose mass but keep the same length.
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