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

3. Types of Solutions hypotonic isotonic hypertonic Cell Swells
90% Water
90% Water
80% Water
10% Salt
10% Salt
20% Salt
20% Salt
10% Salt
10% Salt
80% Water
90% Water
90% Water
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. In the diagram below, a “cell” with a semipermeable membrane has been placed in a beaker containing substances that are dissolved in water. The membrane is permeable to water. It is NOT permeable to glucose, starch, or salt.
65% Glucose
25 % Glucose
75%
H20
35%
H20
Each environment must equal to 100%. Based on this information, what is the % of water inside and outside of the cell?

7. Beaker 1 What is the % of water inside the cell?
What is the % of water outside the cell?
Will osmosis occur?
If so, in what direction will osmosis occur?
Will the cell shrink or swell?
This diagram show the cell in a(n) hypotonic / hypertonic / isotonic solution.
90% H20
98% H20
98%
H20
YES
90%
H20
Into cell
Swell
Hypotonic

8. Beaker 2 What is the % of water inside the cell?
What is the % of water outside the cell?
Will osmosis occur?
If so, in what direction will osmosis occur?
Will the cell shrink or swell?
This diagram show the cell in a(n) hypotonic / hypertonic / isotonic solution.
90% H20
70% H20
YES
70%
H20
90%
H20
Outside of cell
Shrink
Hypertonic

9. Beaker 3 What is the % of water inside the cell?
What is the % of water outside the cell?
Will osmosis occur?
If so, in what direction will osmosis occur?
Will the cell shrink or swell?
This diagram show the cell in a(n) hypotonic / hypertonic / isotonic solution.
90% H20
90% H20
90%
H20
YES
90%
H20
Both
Stays same
Isotonic

10. 1. Fill in any missing percentages (water or solute)
1. Fill in any missing percentages (water or solute) Remember each environment must equal 100%. 2. Draw an arrow to show which way the water will move by osmosis. 3. Name the type of solution (hypertonic, isotonic, hypotonic).
60% solute
10% solute
63% H2O
Hypotonic
Hypertonic
Type of Solution: ___________ Type of Solution: ___________