Osmosis & Diffusion

Front

What is osmosis?

Back

The movement of water molecules through a selectively permeable membrane from an area of high water concentration to an area of low water concentration.

Front

What is diffusion?

Back

The process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What does isotonic mean?

Back

A solution that has the same concentration of solutes as another solution, resulting in no net movement of water.

Front

What does hypertonic mean?

Back

A solution that has a higher concentration of solutes compared to another solution, causing water to move out of the cell.

Front

What does hypotonic mean?

Back

A solution that has a lower concentration of solutes compared to another solution, causing water to move into the cell.

Front

What is a selectively permeable membrane?

Back

A membrane that allows certain molecules to pass through while blocking others.

Front

What happens to a cell in a hypertonic solution?

Back

The cell shrinks as water moves out of it.

Front

What happens to a cell in a hypotonic solution?

Back

The cell swells and may burst as water moves into it.

Front

What is the role of the cell membrane in osmosis and diffusion?

Back

The cell membrane regulates the movement of substances in and out of the cell.

Front

What is an example of diffusion in everyday life?

Back

The smell of perfume spreading in a room.