A ciliated epithelial cell is kept in a solution. Measurements show that the cell's volume does not change, although water molecules continue to cross its cell membrane in both directions.

Which statement is correct?

The solution has a lower water potential than the cytoplasm, so water leaves faster than it enters.

The solution and the cytoplasm have the same water potential, so there is no net movement of water.

The solution has a higher water potential than the cytoplasm, so water enters faster than it leaves.

The cell uses energy released by respiration to keep the amount of water inside it constant.

A ciliated epithelial cell is kept in a solution. Measurements show that the cell's volume does not change, although water molecules continue to cross its cell membrane in both directions.

Which statement is correct?

The solution has a lower water potential than the cytoplasm, so water leaves faster than it enters.

The solution and the cytoplasm have the same water potential, so there is no net movement of water.

The solution has a higher water potential than the cytoplasm, so water enters faster than it leaves.

The cell uses energy released by respiration to keep the amount of water inside it constant.

2.1 Supplying the cell

Question 20

Markscheme

2.1 Supplying the cell

Question 20

Markscheme

2.1 Supplying the cell

Question 20

2.1 Supplying the cell Questions

2.1 Supplying the cell

Question 20

2.1 Supplying the cell Questions