Cell Transport

Front

What happens to a cell in a hypotonic solution?

Back

The cell gains water and swells.

Front

What happens to a cell in a hypertonic solution?

Back

The cell loses water and shrinks.

Front

What does it mean for a membrane to be partially permeable?

Back

It allows some molecules to pass through it.

Front

What is diffusion?

Back

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

Front

What is exocytosis?

Back

The process by which a cell expels materials in vesicles.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space.

Front

What role do transport proteins play in cell membranes?

Back

They facilitate the movement of substances across the membrane.

Front

What is facilitated diffusion?

Back

The process of passive transport of molecules across a membrane via specific transmembrane integral proteins.