Cell Transport Flashcard

Front

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

Back

Only some things can cross the membrane.

Front

What type of transport uses transport (channel) proteins to help molecules move from higher to lower concentrations?

Back

Facilitated Diffusion

Front

What is the term for the movement of molecules across the cell membrane without energy?

Back

Passive transport

Front

What is the primary function of the cell membrane?

Back

Controls what enters and leaves the cell.

Front

What process moves any material from high concentration to low concentration?

Back

Diffusion

Front

What is osmosis?

Back

The movement of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is active transport?

Back

The movement of molecules against their concentration gradient, requiring energy.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy, while active transport does.

Front

What role do channel proteins play in cell transport?

Back

They facilitate the movement of specific molecules across the cell membrane.

Front

What is endocytosis?

Back

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