Diffusion and Osmosis

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration until equilibrium is reached.

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

Define hypertonic solution.

Back

A hypertonic solution has a higher concentration of solutes compared to another solution, leading to the movement of water out of cells.

Front

Define hypotonic solution.

Back

A hypotonic solution has a lower concentration of solutes compared to another solution, causing water to move into cells.

Front

Define isotonic solution.

Back

An isotonic solution has an equal concentration of solutes compared to another solution, resulting in no net movement of water.

Front

What role does the cell membrane play in osmosis?

Back

The cell membrane regulates the movement of water and solutes in and out of the cell.

Front

True or False: Osmosis requires energy to occur.

Back

False. Osmosis is a passive process that does not require energy.

Front

True or False: Diffusion occurs from low concentration to high concentration.

Back

False. Diffusion occurs from high concentration to low concentration.

Front

What is the main driving force behind diffusion?

Back

The concentration gradient, which is the difference in concentration between two areas.

Front

What happens to a cell in a hypertonic solution?

Back

The cell will lose water and may shrivel due to the higher concentration of solutes outside the cell.