Cell Membrane/Transport

Front

What is the main function of the cell membrane?

Back

The protective outer layer that controls what enters and leaves the cell.

Front

What is passive transport?

Back

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

Front

What is active transport?

Back

The movement of substances across a cell membrane using energy.

Front

What is the difference between passive and active transport?

Back

Active transport uses energy; passive transport does not.

Front

What does hydrophilic mean?

Back

Water-loving.

Front

What does hydrophobic mean?

Back

Water-fearing.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is endocytosis?

Back

The process by which a cell takes in materials by engulfing them.

Front

What is exocytosis?

Back

The process by which a cell expels materials in vesicles.

Front

What is a selectively permeable membrane?

Back

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