Ch 2 L3 Cell Transport

Front

What is required for active transport to occur?

Back

Energy

Front

What is the direction of molecule movement during diffusion?

Back

From an area of high concentration to an area of low concentration.

Front

What limits the size of a cell?

Back

The ratio of its surface area to its volume.

Front

Does passive transport require energy?

Back

No, passive transport does not require energy.

Front

Why can water molecules pass directly through the cell membrane?

Back

Because they are small in size.

Front

What is the primary difference between active transport and passive transport?

Back

Active transport requires energy, while passive transport does not.

Front

What is osmosis?

Back

The diffusion of water molecules across a selectively permeable membrane.

Front

What role do transport proteins play in cell transport?

Back

They facilitate the movement of molecules across the cell membrane.

Front

What is the significance of the concentration gradient in diffusion?

Back

It drives the movement of molecules from high to low concentration.

Front

What is facilitated diffusion?

Back

A process that uses transport proteins to move molecules across the cell membrane without energy.