Cell Transport

Front

What is the term for when large molecules exit a cell?

Back

Exocytosis

Front

During active transport, molecules move from...

Back

...from low to high concentration.

Front

What is the movement of molecules from high to low concentration called?

Back

Simple diffusion.

Front

During diffusion, molecules move...

Back

...from high to low concentration.

Front

What type of molecules can directly go through the phospholipid bilayer without assistance?

Back

Very small non-polar molecules.

Front

What is the process called when cells take in large molecules?

Back

Endocytosis.

Front

What is osmosis?

Back

The movement of water molecules across a semipermeable membrane from high to low water concentration.

Front

What is facilitated diffusion?

Back

The process of passive transport of molecules across a biological membrane via specific transmembrane integral proteins.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy, while active transport requires energy to move molecules against their concentration gradient.

Front

What role do transport proteins play in cell transport?

Back

Transport proteins help move substances across the cell membrane that cannot directly diffuse through the lipid bilayer.