Cell Transport

Front

What is osmosis?

Back

Osmosis is the movement of water molecules from an area of high water concentration to an area of low water concentration.

Front

What is the main difference between passive and active transport?

Back

The main difference is that active transport requires energy, while passive transport does not.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process by which molecules move across a cell membrane through protein channels without the use of energy.

Front

What is active transport?

Back

Active transport is the movement of molecules against their concentration gradient, requiring energy.

Front

What are phospholipids?

Back

Phospholipids are a type of lipid that makes up most of the cell membrane, consisting of a hydrophilic head and two hydrophobic tails.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in large molecules by engulfing them in a membrane vesicle.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel large molecules by fusing a vesicle with the cell membrane.

Front

What role do proteins play in cell transport?

Back

Proteins facilitate the movement of molecules across the cell membrane, either through channels (facilitated diffusion) or by acting as pumps (active transport).

Front

What is diffusion?

Back

Diffusion is the movement of small molecules from an area of high concentration to an area of low concentration.

Front

What is a concentration gradient?

Back

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