Cellular Transport

Front

What is Cellular Transport?

Back

The process by which substances move in and out of cells, maintaining homeostasis.

Front

What is Passive Transport?

Back

The movement of substances across a cell membrane without the use of energy, typically down their concentration gradient.

Front

What is Active Transport?

Back

The movement of substances against their concentration gradient, requiring energy (ATP) to move molecules into or out of the cell.

Front

What is Osmosis?

Back

The diffusion of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is Facilitated Diffusion?

Back

A type of passive transport that uses protein channels to help move molecules across the cell membrane.

Front

What is a Concentration Gradient?

Back

A difference in the concentration of a substance across a space, which drives the movement of molecules.

Front

What is a Solute?

Back

A substance that is dissolved in a solution, such as salt or sugar.

Front

What is a Solvent?

Back

A substance that dissolves a solute, forming a solution; water is the most common solvent.

Front

What is Endocytosis?

Back

The process by which cells engulf substances from their external environment, bringing them into the cell.

Front

What is Exocytosis?

Back

The process by which cells expel materials in vesicles, releasing them outside the cell.