Cell Transport

Front

What does selectively-permeable mean?

Back

The cell controls what passes in and out of the cell.

Front

Where is there a low concentration of dye?

Back

At the bottom of the cup.

Front

What process occurs when WATER diffuses across a membrane?

Back

Osmosis.

Front

Permeable means?

Back

Things can pass through.

Front

What is diffusion?

Back

When molecules move from a high concentration to a low.

Front

What is the function of the cell membrane?

Back

To protect the cell and control what enters and exits.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is a concentration gradient?

Back

The difference in concentration of a substance across a space.

Front

What is active transport?

Back

The movement of substances against their concentration gradient, requiring energy.

Front

What is passive transport?

Back

The movement of substances across a membrane without the use of energy.