Worksheet illustrating osmosis and diffusion processes in cells with various solute concentrations.

Problem Overview:

The worksheet focuses on osmosis and diffusion, specifically how water and solutes move across a selectively permeable membrane (like a cell membrane). The task involves analyzing different scenarios where cells are placed in solutions of varying concentrations. The goal is to determine the direction of water movement, the resulting effect on the cell, and whether any missing percentages need to be filled in.

---

Key Concepts:

1. Osmosis: The movement of water molecules from an area of lower solute concentration to an area of higher solute concentration through a selectively permeable membrane.
2. Diffusion: The movement of solute molecules from an area of higher concentration to an area of lower concentration.
3. Concentration Gradient: The difference in solute concentration between two regions.
4. Types of Solutions:
- Hypotonic: Solution with lower solute concentration than the cell interior; water moves into the cell.
- Isotonic: Solution with equal solute concentration to the cell interior; no net movement of water.
- Hypertonic: Solution with higher solute concentration than the cell interior; water moves out of the cell.

---

Step-by-Step Solution:

#### General Instructions for Each Cell:
For each scenario:
1. Draw an arrow to show the direction of water movement.
2. Label what will happen to the cell as a result of osmosis/diffusion (e.g., shrivel, swell).
3. Identify the type of solution (hypotonic, isotonic, or hypertonic).
4. Fill in any missing percentages if necessary.

---

#### Analysis of Each Scenario:

##### Cell 1:
- Interior: 10% solute, 90% water.
- Exterior: 20% solute, 80% water.
- Comparison: The exterior has a higher solute concentration than the interior.
- Conclusion:
- Water will move out of the cell (from low solute to high solute).
- The cell will shrivel due to water loss.
- The solution is hypertonic.
- Missing Percentages: None.

##### Cell 2:
- Interior: 10% solute, 90% water.
- Exterior: 30% solute, 70% water.
- Comparison: The exterior has a higher solute concentration than the interior.
- Conclusion:
- Water will move out of the cell.
- The cell will shrivel.
- The solution is hypertonic.
- Missing Percentages: None.

##### Cell 3:
- Interior: 10% solute, 90% water.
- Exterior: 20% solute, 80% water.
- Comparison: The exterior has a higher solute concentration than the interior.
- Conclusion:
- Water will move out of the cell.
- The cell will shrivel.
- The solution is hypertonic.
- Missing Percentages: None.

##### Cell 4:
- Interior: 50% solute, 50% water.
- Exterior: 1% solute, 99% water.
- Comparison: The exterior has a lower solute concentration than the interior.
- Conclusion:
- Water will move into the cell.
- The cell will swell or potentially burst (lyse).
- The solution is hypotonic.
- Missing Percentages: None.

##### Cell 5:
- Interior: 60% solute, 40% water.
- Exterior: 25% solute, 75% water.
- Comparison: The exterior has a lower solute concentration than the interior.
- Conclusion:
- Water will move into the cell.
- The cell will swell.
- The solution is hypotonic.
- Missing Percentages: None.

##### Cell 6:
- Interior: 10% solute, 90% water.
- Exterior: 10% solute, 90% water.
- Comparison: The exterior has the same solute concentration as the interior.
- Conclusion:
- There will be no net movement of water.
- The cell will remain unchanged.
- The solution is isotonic.
- Missing Percentages: None.

##### Cell 7:
- Interior: 10% solute, 90% water.
- Exterior: 5% solute, 95% water.
- Comparison: The exterior has a lower solute concentration than the interior.
- Conclusion:
- Water will move into the cell.
- The cell will swell.
- The solution is hypotonic.
- Missing Percentages: None.

##### Cell 8:
- Interior: 10% solute, 90% water.
- Exterior: 20% solute, 80% water.
- Comparison: The exterior has a higher solute concentration than the interior.
- Conclusion:
- Water will move out of the cell.
- The cell will shrivel.
- The solution is hypertonic.
- Missing Percentages: None.

##### Cell 9:
- Interior: 10% solute, 90% water.
- Exterior: 30% solute, 70% water.
- Comparison: The exterior has a higher solute concentration than the interior.
- Conclusion:
- Water will move out of the cell.
- The cell will shrivel.
- The solution is hypertonic.
- Missing Percentages: None.

##### Cell 10:
- Interior: 10% solute, 90% water.
- Exterior: 20% solute, 80% water.
- Comparison: The exterior has a higher solute concentration than the interior.
- Conclusion:
- Water will move out of the cell.
- The cell will shrivel.
- The solution is hypertonic.
- Missing Percentages: None.

---

Final Answer:

For each cell, the direction of water movement, the effect on the cell, and the type of solution are summarized as follows:

1. Water moves out, cell shrivels, solution is hypertonic.
2. Water moves out, cell shrivels, solution is hypertonic.
3. Water moves out, cell shrivels, solution is hypertonic.
4. Water moves in, cell swells, solution is hypotonic.
5. Water moves in, cell swells, solution is hypotonic.
6. No net water movement, cell remains unchanged, solution is isotonic.
7. Water moves in, cell swells, solution is hypotonic.
8. Water moves out, cell shrivels, solution is hypertonic.
9. Water moves out, cell shrivels, solution is hypertonic.
10. Water moves out, cell shrivels, solution is hypertonic.

\boxed{\text{See detailed analysis above for each cell.}}