Osmosis and diffusion practice worksheet illustrating particle movement across membranes.

To solve the problem related to osmosis and diffusion, let's analyze the image step by step. The task involves identifying which cells will experience net movement of water (osmosis) based on the concentration of solutes inside and outside the cell.

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 semipermeable membrane.
2. Diffusion: The movement of solute molecules from an area of higher concentration to an area of lower concentration.
3. Tonicity:
- Hypotonic: Solution with lower solute concentration than the cell interior → Water moves into the cell.
- Isotonic: Solution with equal solute concentration as 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 Analysis:

#### Cell 1:
- Inside the cell: High solute concentration (indicated by many solute particles).
- Outside the cell: Low solute concentration (indicated by few solute particles).
- Conclusion: The cell is in a hypotonic environment. Water will move into the cell.

#### Cell 2:
- Inside the cell: Low solute concentration.
- Outside the cell: High solute concentration.
- Conclusion: The cell is in a hypertonic environment. Water will move out of the cell.

#### Cell 3:
- Inside the cell: Moderate solute concentration.
- Outside the cell: Moderate solute concentration.
- Conclusion: The cell is in an isotonic environment. There will be no net movement of water.

#### Cell 4:
- Inside the cell: High solute concentration.
- Outside the cell: Low solute concentration.
- Conclusion: The cell is in a hypotonic environment. Water will move into the cell.

#### Cell 5:
- Inside the cell: Low solute concentration.
- Outside the cell: High solute concentration.
- Conclusion: The cell is in a hypertonic environment. Water will move out of the cell.

#### Cell 6:
- Inside the cell: Moderate solute concentration.
- Outside the cell: Moderate solute concentration.
- Conclusion: The cell is in an isotonic environment. There will be no net movement of water.

Final Answer:

The cells that will experience net movement of water are:
- Cell 1: Water moves into the cell (hypotonic).
- Cell 2: Water moves out of the cell (hypertonic).
- Cell 4: Water moves into the cell (hypotonic).
- Cell 5: Water moves out of the cell (hypertonic).

Cells 3 and 6 are in isotonic environments, so there is no net movement of water.

$$
\boxed{\text{Cells 1, 2, 4, and 5}}
$$