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 is tonicity?

Back

Tonicity refers to the ability of a surrounding solution to cause a cell to gain or lose water.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, a cell will lose water and shrink.

Front

What is a hypotonic solution?

Back

A hypotonic solution is one where the concentration of solutes is lower outside the cell than inside, leading to water entering the cell.

Front

What is an isotonic solution?

Back

An isotonic solution has equal concentrations of solutes inside and outside the cell, resulting in no net movement of water.

Front

Define solute.

Back

A solute is a substance that is dissolved in a solvent to form a solution.

Front

Define solvent.

Back

A solvent is a substance that dissolves a solute, resulting in a solution.

Front

What is equilibrium in the context of osmosis?

Back

Equilibrium is the state where the concentration of solutes is equal on both sides of a membrane, resulting in no net movement of water.

Front

What occurs when a cell is placed in a hypotonic solution?

Back

The cell swells and may burst due to the influx of water.

Front

What is the effect of a hypertonic solution on plant cells?

Back

Plant cells lose water and become plasmolyzed, causing the cell membrane to pull away from the cell wall.