STAAR Biology Cellular Processes

Front

What is dialysis?

Back

Dialysis is an ion-exchange membrane separation process, driven by a concentration gradient, much like diffusion, to clean the blood.

Front

What is exocytosis?

Back

Exocytosis is the process by which large molecules are taken out of the cell by transporting them within a vesicle outside the cell membrane.

Front

What type of cellular transport requires a transport protein?

Back

Facilitated diffusion requires a transport protein.

Front

What does active transport require?

Back

Active transport requires energy in the form of ATP.

Front

What is osmosis?

Back

Osmosis is the method in which water moves across a membrane, such as water entering a plant cell.

Front

Define diffusion.

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is the difference between passive and active transport?

Back

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

Front

What role do channel proteins play in cellular transport?

Back

Channel proteins facilitate the movement of specific molecules across the cell membrane.

Front

What is phagocytosis?

Back

Phagocytosis is a type of endocytosis where a cell engulfs large particles or cells.

Front

What is the function of ATP in cellular processes?

Back

ATP provides the energy required for various cellular processes, including active transport.