Cell Transport

Front

What is Passive Transport?

Back

Movement of materials from high to low concentration through a protein channel without the use of energy.

Front

What is Active Transport?

Back

Movement of materials from low to high concentration, requiring energy input.

Front

What is the concentration gradient?

Back

The difference in concentration of a substance between two areas.

Front

What is Facilitated Diffusion?

Back

The process of moving molecules across the cell membrane from high to low concentration through a carrier protein.

Front

What is Diffusion?

Back

The movement of particles 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.

Front

What is a protein channel?

Back

A protein that allows the transport of specific substances across a cell membrane.

Front

What is a carrier protein?

Back

A protein that transports specific substances across a cell membrane by changing shape.

Front

What is the role of energy in Active Transport?

Back

Energy is required to move substances against their concentration gradient.

Front

What happens during Passive Transport?

Back

Substances move along their concentration gradient without the use of energy.