Cell Transport

Front

What is Passive Transport?

Back

The movement of particles from an area of high concentration to an area of low concentration without the use of energy.

Front

What is Active Transport?

Back

The movement of particles against their concentration gradient, from low to high concentration, requiring energy.

Front

What is a Phospholipid?

Back

A type of lipid molecule that is a major component of cell membranes, consisting of a hydrophilic 'head' and two hydrophobic 'tails'.

Front

What is Endocytosis?

Back

A type of active transport where a cell engulfs large amounts of material or nutrients from the outside environment.

Front

What is Exocytosis?

Back

The process by which a cell expels materials in vesicles, releasing them outside the cell.

Front

What is Diffusion?

Back

The passive movement of particles from an area of high concentration to an area of low concentration until equilibrium is reached.

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.

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What is Facilitated Diffusion?

Back

The process of passive transport of molecules across a cell membrane via protein channels.

Front

What is a Protein Channel?

Back

A protein that spans the cell membrane and allows specific molecules to pass through, facilitating transport.

Front

What is the difference between Passive and Active Transport?

Back

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