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When a cell needs to get rid of waste products and push them out of the cell.

User Hpopiolkiewicz
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1 Answer

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16 votes

Step-by-step explanation:

Cells use both diffusion and osmosis to get rid of their

wastes. Cells can bias the movement of waste molecules

out of and away from themselves.

One way is to temporarily convert the waste product into a

different molecule that will not diffuse backwards.

User James Wilkins
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