Diffusion and Osmosis Review

Front

What regulates what enters and leaves a cell?

Back

Cell Membrane

Front

What is diffusion?

Back

Diffusion is when molecules move from a high concentration to a low concentration.

Front

What happens when an egg with a dissolved shell is placed in pure water for 48 hours?

Back

The egg will gain water and swell.

Front

What does semi-permeable mean?

Back

Semi-permeable means some things can pass through, while other things can't.

Front

What does 'high concentration area' mean?

Back

High concentration area means molecules are tightly packed together.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a semi-permeable membrane from a low concentration to a high concentration.

Front

What is the role of the cell membrane?

Back

The cell membrane controls the movement of substances in and out of the cell.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in concentration of a substance between two areas.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, the cell will lose water and shrink.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, the cell will gain water and swell.