Cell Transport

Front

What is diffusion?

Back

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

Front

During diffusion, molecules tend to move:

Back

Down the concentration gradient.

Front

What is osmosis?

Back

Diffusion of water through a selectively permeable membrane.

Front

What is active transport?

Back

The movement of molecules across a membrane against their concentration gradient, requiring energy.

Front

What is passive transport?

Back

The movement of molecules across a cell membrane without the use of energy.

Front

What happens to an animal cell in a hypertonic solution?

Back

It shrinks (gets smaller).

Front

What is a selectively permeable membrane?

Back

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

Front

What is the main difference between osmosis and diffusion?

Back

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

Front

What is a hypertonic solution?

Back

A solution with a higher concentration of solutes compared to another solution.

Front

What is a hypotonic solution?

Back

A solution with a lower concentration of solutes compared to another solution.