Osmosis and Diffusion

Front

What is Selective Permeability?

Back

The ability of the cell membrane to allow some things to pass through while preventing other things from passing through.

Front

What is Osmosis?

Back

The movement of WATER molecules across the cell membrane.

Front

What is Diffusion?

Back

The movement of molecules from an area of high concentration to an area of low concentration.

Front

What is Active Transport?

Back

The movement of materials across the cell membrane that requires energy from the cell.

Front

What is the difference between Osmosis and Diffusion?

Back

Osmosis specifically refers to the movement of water molecules, while diffusion refers to the movement of any type of molecules.

Front

What happens to a cell in a hypertonic solution?

Back

Water moves out of the cell, causing it to shrink.

Front

What happens to a cell in a hypotonic solution?

Back

Water moves into the cell, causing it to swell.

Front

What is an example of passive transport?

Back

Diffusion of oxygen molecules into a cell.

Front

What is a concentration gradient?

Back

The difference in concentration of a substance between two areas.

Front

What role do protein channels play in cell transport?

Back

They facilitate the movement of specific molecules across the cell membrane.