Active Transport (with some passive) (H)

Front

What is Active Transport?

Back

The movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy (ATP).

Front

What is Passive Transport?

Back

The movement of molecules across a cell membrane without the use of energy, typically from a region of higher concentration to a region of lower concentration.

Front

Define Facilitated Diffusion.

Back

A type of passive transport where molecules cross the cell membrane through protein channels without the use of energy.

Front

What are Aquaporins?

Back

Specific channel proteins that facilitate the transport of water molecules across the cell membrane.

Front

What does ATP stand for?

Back

Adenosine Triphosphate, the energy currency of the cell.

Front

What does ADP stand for?

Back

Adenosine Diphosphate, a lower-energy molecule that can be converted back to ATP.

Front

What is the difference between Simple Diffusion and Facilitated Diffusion?

Back

Simple diffusion does not require proteins and occurs directly through the membrane, while facilitated diffusion requires specific channel proteins.

Front

What is the role of Protein Pumps in Active Transport?

Back

Protein pumps use energy to move molecules against their concentration gradient, from low to high concentration.

Front

What is Endocytosis?

Back

A process by which cells engulf substances from the outside environment, forming a vesicle to bring them into the cell.

Front

What is the concentration gradient?

Back

The difference in concentration of a substance across a space, which drives the movement of molecules during diffusion.