Cell Transport: Passive vs. Active

Front

What is Active Transport?

Back

A type of transport that requires energy (ATP) to move molecules across the cell membrane from low concentration to high concentration, against the concentration gradient.

Front

What is Passive Transport?

Back

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

Front

What is Diffusion?

Back

The process by which molecules spread from an area of high concentration to an area of low concentration until evenly distributed.

Front

What is Osmosis?

Back

The diffusion of water molecules across a selectively permeable membrane.

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 happens to a cell in a hypertonic solution?

Back

Water moves out of the cell, causing it to shrink.

Front

What happens to a cell in a hypotonic solution?

Back

Water moves into the cell, causing it to swell.

Front

What is a Concentration Gradient?

Back

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

Front

What is the role of ATP in Active Transport?

Back

ATP provides the energy needed to move molecules against their concentration gradient.

Front

What is an example of Diffusion in everyday life?

Back

The spreading of perfume scent throughout a room.