Cell Transport

Front

What is exocytosis?

Back

Exocytosis is a process of active transport where cells expel materials by vesicles fusing with the plasma membrane.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the need for energy input, typically along a concentration gradient.

Front

Describe the movement of particles in passive transport.

Back

In passive transport, particles move from an area of high concentration to an area of low concentration.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy, usually in the form of ATP.

Front

What is the direction of movement in active transport?

Back

In active transport, substances move from an area of low concentration to an area of high concentration.

Front

What role do transport proteins play in cell transport?

Back

Transport proteins facilitate the movement of substances across the cell membrane, either passively or actively.

Front

What is osmosis?

Back

Osmosis is the passive transport 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 facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move substances across the cell membrane.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion refers to the movement of solute particles from high to low concentration, while osmosis specifically refers to the movement of water.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance across a space, which drives the movement of particles.