BI-488
Diffusion
Biology · Secondary 3 · Medium · Diffusion
A student places a cube of agar jelly with a high concentration of dye into a beaker of clear water. After 10 minutes, the water near the cube becomes coloured. Which statement best explains this observation?
- Water moves into the agar cube by osmosis
- Dye molecules move into the water by diffusion
- Dye molecules are pumped out by active transport
- Water moves out of the agar cube by osmosis
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