1. Types of solutions

2. Types of Solutions & the Direction of Water Movement:
hypertonic – the fluid outside the cell has a higher concentration of particles (or less water molecules) than the inside of the cell therefore, water molecules leave the cell and the cell shrinks
hypotonic – the fluid outside the cell has a lower concentration of particles (or more water molecules) than the inside of the cell therefore, water molecules enter the cell and the cell swells
isotonic – the fluid inside and outside of the cell have the same concentration of particles and free water molecules, water molecules move in both directions

3. Types of Solutions hypotonic isotonic hypertonic Cell Swells
10% Salt
10% Salt
20% Salt
20% Salt
10% Salt
10% Salt
Lower concentration of particles (or more water molecules) outside the cell.
Equal concentration of particles (and water molecules) inside and outside the cell.
Higher concentration of particles (or less water molecules) outside the cell.
Cell Swells
Cell Stays the Same
Cell Shrinks

4. Effects of Hypotonic, Isotonic, and Hypertonic Solutions
50 % Salt
50% H2O
60% Sugar
40% H2O
40% Oxygen
60% H2O
10 % Salt
90% H2O
30% Sugar
70% H2O
40% Oxygen
60% H2O
or Swells
or Shrinks

5. Turgid – swollen; the cell wall keeps the cell from bursting
40%
Solute
30%
Solute
70%
Solute
40%
Solute
60%
Solute
30%
Solute
Shrinks
20%
Solute
30%
Solute
50%
Solute
10%
Solute
40%
Solute
30%
Solute
Turgid – swollen; the cell wall keeps the cell from bursting
Turgid
Normal
Shrinks

6. Beaker 1
This diagram shows the cell in a(n) hypotonic / hypertonic / isotonic solution.
Will osmosis occur?
If so, in what direction will osmosis occur?
Will the cell shrink or swell?
Hypotonic
YES
Into cell
Swell/Lyse/Burst

7. Beaker 2
This diagram shows the cell in a(n) hypotonic / hypertonic / isotonic solution.
Will osmosis occur?
If so, in what direction will osmosis occur?
Will the cell shrink or swell?
Hypertonic
YES
Outside of cell
Shrink

8. Beaker 3
This diagram shows the cell in a(n) hypotonic / hypertonic / isotonic solution.
Will osmosis occur?
If so, in what direction will osmosis occur?
Will the cell shrink or swell?
Isotonic
YES
Both
Stays same

9. 1. Name the type of solution (hypertonic, isotonic, hypotonic). 2
1. Name the type of solution (hypertonic, isotonic, hypotonic). 2. Draw an arrow to show which way the water will move by osmosis. 3. State what will happen to the cell.
50%
solute
12%
solute
Cell
Swells
Cell
Shrinks
10%
solute
37%
solute
Hypotonic
Hypertonic
Type of Solution: ___________ Type of Solution: ___________