Cell Transport

Front

What is Cell Transport?

Back

Cell transport refers to the movement of substances across the cell membrane, which can occur through passive or active mechanisms.

Front

Define Passive Transport.

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, moving from areas of high concentration to low concentration.

Front

Define Active Transport.

Back

Active transport is the movement of substances against their concentration gradient, from low to high concentration, requiring energy in the form of ATP.

Front

What is Endocytosis?

Back

Endocytosis is an active transport process where cells engulf substances from the outside environment, bringing them into the cell.

Front

What is Exocytosis?

Back

Exocytosis is an active transport process where cells expel materials to the outside environment by vesicles fusing with the cell membrane.

Front

What role does ATP play in Active Transport?

Back

ATP provides the energy required for active transport processes, enabling the movement of substances against their concentration gradient.

Front

Give an example of Passive Transport.

Back

An example of passive transport is diffusion, where molecules like oxygen move from an area of high concentration to an area of low concentration.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion is the movement of solute particles from high to low concentration, while osmosis specifically refers to the movement of water across a semipermeable membrane.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein channels 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 molecules during transport.