Unit 3 Lesson 3 - Osmosis & Tonicity Practice

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What does hypotonic mean?

Back

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

Front

What does hypertonic mean?

Back

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

Front

What does isotonic mean?

Back

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

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium is the state reached when molecules are evenly distributed in a space, resulting in no net movement.

Front

What happens to a cell in a hypotonic solution?

Back

The cell swells as water enters due to the lower concentration of solutes outside the cell.

Front

What happens to a cell in a hypertonic solution?

Back

The cell shrinks as water exits due to the higher concentration of solutes outside the cell.

Front

What is a selectively permeable membrane?

Back

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

Front

What is the role of water in osmosis?

Back

Water moves to balance solute concentrations on either side of a membrane.

Front

How does osmosis differ from diffusion?

Back

Osmosis specifically refers to the movement of water, while diffusion refers to the movement of any molecules.