Cell Transport - Obtaining and Removing Materials

Front

What is Exocytosis?

Back

Exocytosis is the process during which a cell's vesicles join with the cell membrane, releasing their contents outside the cell.

Front

What is Passive Transport?

Back

Passive Transport is the type of transport that moves substances through a cell membrane from areas of high concentration to areas of low concentration without using the cell’s energy.

Front

What is Endocytosis?

Back

Endocytosis is the process during which a cell takes in a substance by surrounding it with the cell membrane, pinching off into a vesicle.

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 process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What is Facilitated Diffusion?

Back

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

Front

What is Active Transport?

Back

Active Transport is the movement of substances against their concentration gradient, requiring energy from the cell.

Front

What role do vesicles play in cell transport?

Back

Vesicles are small membrane-bound sacs that transport materials within the cell and to the cell membrane for exocytosis.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane is a barrier that allows certain substances to pass through while blocking others.

Front

What is the difference between active and passive transport?

Back

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