Cell Transport Review

Front

What is Active Transport?

Back

The movement of molecules across a cell membrane from an area of low concentration to an area of high concentration, requiring energy.

Front

What is Passive Transport?

Back

The movement of molecules across a cell membrane without the use of energy, typically from an area of high concentration to an area of low concentration.

Front

What does 'selectively permeable' mean?

Back

A property of cell membranes that allows some substances to pass through while blocking others.

Front

What is Facilitated Diffusion?

Back

The process of transporting molecules across a cell membrane via a carrier protein from an area of high concentration to an area of low concentration.

Front

What is Osmosis?

Back

The diffusion of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is Endocytosis?

Back

The process by which a cell engulfs material from its environment, bringing it into the cell.

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What is Exocytosis?

Back

The process by which a cell expels materials to the outside environment.

Front

What is a Carrier Protein?

Back

A protein that transports specific substances across a cell membrane.

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 along their concentration gradient.

Front

What is a Concentration Gradient?

Back

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