2-3.h Osmosis and 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

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing the cell to swell as water enters.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing the cell to shrink as water exits.

Front

What is an isotonic solution?

Back

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

Front

What happens to a cell in a hypotonic solution?

Back

The cell will swell up as water moves into it.

Front

What happens to a cell in a hypertonic solution?

Back

The cell will shrink as water moves out of it.

Front

What happens to a cell in an isotonic solution?

Back

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

Front

What is a semipermeable membrane?

Back

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

Front

What is the direction of water movement in osmosis?

Back

Water moves from an area of lower solute concentration to an area of higher solute concentration.

Front

What is the effect of osmosis on plant cells in a hypotonic solution?

Back

Plant cells will become turgid (firm) as water enters, providing structural support.