Question

a. the solution inside the cell will become (more/less) concentrated with the net movement of water.

2

b. the solution outside the cell will become (more/less) concentrated with the net movement of water.

1. applying what you already know about the random movement of molecules, what will eventually happen to the concentration on both sides of the membrane?

1. the definition of diffusion is the movement of molecules from an area of high concentration to an area of low concentration. according to this definition, is the cell in model 1 undergoing diffusion? explain.

1. in the cell diagram in model 1, where is the higher concentration of water—inside or outside of the cell?

1. list the main takeaways from this model

Explanation:

a. When water moves out of the cell (net movement), the solute - to - solvent ratio inside the cell increases, making it more concentrated. When water moves into the cell, the solute - to - solvent ratio decreases, making it less concentrated. Without knowing the direction of water movement, we assume a general case where if there is a net movement of water out of the cell, the answer is more.
b. Similar to part a, if water moves out of the cell, the outside solution gets more water and becomes less concentrated. If water moves into the cell, the outside solution loses water and becomes more concentrated. Assuming a net movement of water out of the cell (a common osmosis scenario), the answer is less.

1. Due to the random movement of molecules (diffusion and osmosis), the concentration on both sides of the membrane will eventually reach equilibrium.
2. If there is a concentration gradient of molecules across the cell membrane in Model 1, and molecules are moving from high to low concentration, then the cell is undergoing diffusion. We need to check the model for such a gradient.
3. The side with a lower solute concentration has a higher water concentration. We need to check Model 1 to determine if the inside or outside has a lower solute concentration.
4. Main takeaways could include understanding of diffusion, osmosis, concentration gradients, and the role of the cell membrane in regulating molecule movement.

Answer:

a. more
b. less

1. The concentrations on both sides of the membrane will reach equilibrium.
2. It depends on if there is a concentration gradient of molecules across the cell membrane in Model 1. If there is a gradient and molecules move from high to low concentration, then yes; otherwise, no.
3. Need to check Model 1 to determine if inside or outside has a lower solute (higher water) concentration.
4. Understanding of diffusion, osmosis, concentration gradients, and cell - membrane function.