Unit 3 PRACTICE - Osmosis & Tonicity Practice

Front

What is osmosis?

Back

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

Front

Define isotonic solution.

Back

An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes outside the cell than inside, causing water to move out of the cell.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes outside the cell than inside, causing water to move into the cell.

Front

What happens to a cell in an isotonic solution?

Back

The cell remains the same size as there is no net movement of water.

Front

What happens to a cell in a hypertonic solution?

Back

The cell shrinks as water moves out of the cell to the area of higher solute concentration.

Front

What happens to a cell in a hypotonic solution?

Back

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

Front

What is a semipermeable membrane?

Back

A semipermeable membrane is a barrier that allows certain molecules to pass through while blocking others.

Front

Explain the term 'solute'.

Back

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

Front

Explain the term 'solvent'.

Back

A solvent is a substance that dissolves a solute, forming a solution.