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Name_____________________
Period_____ Date____________
Osmosis Worksheet
STATEMENT
Isotonic
Cell(s)
Hypotonic Hypertonic
Cell(s)
Cell(s)
1. The concentration of dissolved
substances (stuff) in the solution is
lower than the concentration inside
the cell.
2. When a cell is placed in this
solution, water will enter the cell by
osmosis resulting in osmotic (turgor)
pressure.
3. The concentration of dissolved
substances (stuff) in the solution is the
same as the concentration inside the
cell.
4. The concentration of dissolved
substances (stuff) in the solution is
higher than the concentration inside
the cell.
5. When this solution is injected into
the body no cell disruption occurs
because no net osmosis occurs.
6. Putting a plant in this solution will
result in water loss and cause the plant
to wilt.
Why does a plant like celery get limp when placed in a
hypertonic solution?
Pure water is always what (Hypertonic, Hypotonic, or
Isotonic) compared to any cell? Why?
All of the cells have 20 water molecules and 2 sugar molecules.
Please make sure all ratios are simplified!
Simplify this ratio for 1 easy point.
12:4 becomes ___:____
SOLUTION A: 30 water molecules and 3 sugar molecules
Cell
Solution
Beginning Ratio
_____water molecules : _______ sugar molecules
Ending Ratio
_____water molecules : _______ sugar molecules
1. Is the solution hypertonic, hypotonic, or isotonic with regard to cell?
2. Is the cell hypertonic, hypotonic, or isotonic with regard to solution?
3. Will more water molecules leave the cell, enter the cell, or stay at the
same ratio as they are at now?
4. Will the cell look the same, be shriveled, or be bursting after
equilibrium has been reached?
All of the cells have 20 water molecules and 2 sugar molecules.
SOLUTION B: 30 water molecules and 12 sugar molecules
Beginning Ratio
_____water molecules : _______ sugar molecules
Ending Ratio
_____water molecules : _______ sugar molecules
5. Is the solution hypertonic, hypotonic, or isotonic with regard to cell?
6. Is the cell hypertonic, hypotonic, or isotonic with regard to solution?
7. Will more water molecules leave the cell, enter the cell, or stay at the
same ratio as they are at now?
8. Will the cell look the same, be shriveled, or be bursting after
equilibrium has been reached?
All of the cells have 20 water molecules and 2 sugar molecules.
SOLUTION C: 40 water molecules and 2 sugar molecules
Beginning Ratio
_____water molecules : _______ sugar molecules
Ending Ratio
_____water molecules : _______ sugar molecules
9. Is the solution hypertonic, hypotonic, or isotonic with regard to cell?
10. Is the cell hypertonic, hypotonic, or isotonic with regard to solution?
11. Will more water molecules leave the cell, enter the cell, or stay at the
same ratio as they are at now?
12. Will the cell look the same, be shriveled, or be bursting after
equilibrium has been reached?