Biology: Cell Transport

Front

What does it mean that the cell membrane is selectively permeable?

Back

Certain things can enter while others cannot.

Front

What is the process called when water diffuses across a semi-permeable membrane?

Back

Osmosis.

Front

What type of transport moves substances from low to high concentration?

Back

Active Transport.

Front

What is endocytosis?

Back

A form of active transport where cells engulf materials.

Front

What does active transport require?

Back

Energy.

Front

What is passive transport?

Back

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

Front

What is diffusion?

Back

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

Front

What is the role of the cell membrane?

Back

To protect the cell and regulate what enters and leaves.

Front

What is exocytosis?

Back

The process by which a cell expels materials in vesicles.

Front

What is a semi-permeable membrane?

Back

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