Endocytosis and Exocytosis Follow-Up Questions

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in large molecules from the outside by engulfing them in membrane vesicles.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel large molecules to the outside by packaging them in vesicles that fuse with the cell membrane.

Front

What is active transport?

Back

Active transport is the movement of particles across a cell membrane using energy, typically against their concentration gradient.

Front

What is the difference between endocytosis and exocytosis?

Back

Endocytosis involves taking substances into the cell, while exocytosis involves expelling substances from the cell.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is diffusion?

Back

Diffusion is the passive movement of particles from an area of high concentration to an area of low concentration.

Front

What are vesicles?

Back

Vesicles are small membrane-bound sacs that transport substances within a cell or to the cell membrane.

Front

What does it mean for a substance to move down its concentration gradient?

Back

It means that the substance is moving from an area of high concentration to an area of low concentration.

Front

What role do channel proteins play in cellular transport?

Back

Channel proteins facilitate the passive transport of specific molecules across the cell membrane.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.