Question

The image on the left shows a normal red blood cell, and the image on the right shows a cell that has been put into a new solution. The circles represent the salt in the solutions.

Which statement describes the motion of the water molecules in this situation?

The water molecules move by active transport into the cell from low water concentration to high water concentration.
The water molecules move by osmosis into the cell from low water concentration to high water concentration.
The water molecules move by osmosis into the cell from high water concentration to low water concentration.
The water molecules move by active transport into the cell from high water concentration to low water concentration.

Answer 1

C. The water molecules move by osmosis into the cell from low water concentration to high water concentration.

Step-by-step explanation:

The environment in picture 2 (the solution) has less solute (salt) and more water than in picture 1. Since the cell was isotonic (the same concentration of solute exists inside and outside the cell), if the cell were to be placed in an environment with more water, like in picture 2, water would diffuse through osmosis INTO the cell in order to maintain the same concentration of solute by diluting the solute present in the cell.