BI-1679
Osmosis
Biology · Secondary 4 · Hard · Osmosis
A student investigates osmosis using potato strips in sugar solutions. One strip is placed in pure water and its mass increases. Another strip is placed in a concentrated sugar solution and its mass decreases. Which statement explains these results?
- Water enters cells in pure water and leaves cells in concentrated solution by osmosis.
- Sugar moves into cells in pure water and out of cells in concentrated solution by diffusion.
- Water moves into the potato in both solutions but at different speeds.
- No net movement of water occurs; only cell wall thickness changes.
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