Active & Passive Transport

Front

What is passive transport?

Back

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

Front

What is active transport?

Back

The movement of molecules through the cell membrane from low to high concentration, requiring energy.

Front

Define equilibrium in the context of concentration.

Back

Equilibrium is when concentrations are balanced between two substances.

Front

What is exocytosis?

Back

A form of active transport where cells expel materials in vesicles.

Front

What is phagocytosis?

Back

The process by which cells take in food molecules through active transport.

Front

Give an example of a substance that requires active transport to enter or leave a cell.

Back

Protein.

Front

What is osmosis?

Back

The diffusion of water molecules through a selectively permeable membrane.

Front

What is the difference between diffusion and active transport?

Back

Diffusion is the movement of molecules from high to low concentration without energy, while active transport moves molecules from low to high concentration using energy.

Front

What role do proteins play in active transport?

Back

Proteins act as pumps or carriers to move substances against their concentration gradient.

Front

What is the significance of the cell membrane in transport processes?

Back

The cell membrane regulates what enters and exits the cell, maintaining homeostasis.