Cell Transport

Front

What is endocytosis?

Back

Endocytosis is a process by which cells take in substances by engulfing them in a membrane. It is a form of active transport.

Front

What is passive transport?

Back

Passive transport is the movement of particles across a cell membrane without the use of energy, typically from an area of high concentration to an area of low concentration.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials in vesicles that fuse with the cell membrane. It is a form of active transport.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane, moving from an area of low solute concentration to an area of high solute concentration. It is a type of passive transport.

Front

What is active transport?

Back

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

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances from high to low concentration, while active transport requires energy to move substances from low to high concentration.

Front

What are the two types of endocytosis?

Back

The two types of endocytosis are phagocytosis (cell eating) and pinocytosis (cell drinking).

Front

What role do vesicles play in cell transport?

Back

Vesicles are small membrane-bound sacs that transport materials within the cell and facilitate processes like endocytosis and exocytosis.

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 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 during diffusion.