Osmosis and Diffusion

Front

What is Osmosis?

Back

The movement of WATER molecules across the cell membrane.

Front

What happens to water molecules during osmosis?

Back

Water molecules move from an area of higher concentration to an area of lower concentration.

Front

What is Diffusion?

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is the result of placing an egg in pure water for 48 hours?

Back

The egg will gain water and swell.

Front

What is the main factor that drives osmosis?

Back

The concentration gradient of water molecules.

Front

What type of transport requires energy from the cell?

Back

Active Transport.

Front

What is the difference between osmosis and diffusion?

Back

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

Front

What happens to a cell in a hypertonic solution?

Back

The cell will lose water and shrink.

Front

What happens to a cell in a hypotonic solution?

Back

The cell will gain water and swell.

Front

What is a semi-permeable membrane?

Back

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