SME
Grade 9 Science · Problem type
Cells in hypotonic, isotonic and hypertonic water
Use this for “Onion cells in salt water shrink from their walls. Why?”
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Which way does water move?
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Assumptions
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Water moves by osmosis toward the side with more solute.
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A red blood cell has no wall: it swells and can burst, or shrivels. A plant cell’s wall holds it firm, or its membrane pulls away.
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