Cellular Transport Test

Front

What is Active Transport?

Back

A process that requires energy (ATP) to move molecules across the cell membrane against their concentration gradient.

Front

What is Diffusion?

Back

The movement of molecules from an area of higher concentration to an area of lower concentration without the use of energy.

Front

What is Osmosis?

Back

The diffusion of water molecules through a selectively permeable membrane.

Front

What is Facilitated Diffusion?

Back

A process that allows molecules to cross the cell membrane with the assistance of special proteins, without the use of energy.

Front

What is Endocytosis?

Back

A type of active transport where cells engulf substances to bring them into the cell.

Front

What is Exocytosis?

Back

A process where cells expel materials in vesicles that fuse with the cell membrane.

Front

What does 'against the concentration gradient' mean?

Back

It refers to the movement of molecules from an area of lower concentration to an area of higher concentration, requiring energy.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space or membrane.

Front

What role do protein channels play in cellular transport?

Back

They facilitate the movement of specific molecules across the cell membrane during processes like facilitated diffusion.

Front

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

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy.