Active Transport

Front

What is active transport?

Back

Active transport is the movement of materials across a cell membrane from low concentration to high concentration, requiring energy.

Front

What direction does active transport move materials?

Back

Active transport moves materials from low concentration to high concentration.

Front

What is an example of pump transport?

Back

An example of pump transport is the Na+/K+ Pump.

Front

What is the role of the Na+/K+ Pump?

Back

The Na+/K+ Pump helps maintain the electrochemical gradient by pumping sodium ions out of the cell and potassium ions into the cell.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells release large amounts of material, such as neurotransmitters, across the cell membrane.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf materials from the outside environment, such as bacteria, into the cell.

Front

What is an example of endocytosis?

Back

An example of endocytosis is white blood cells engulfing invading bacteria.

Front

What is the energy source required for active transport?

Back

Active transport requires energy in the form of ATP.

Front

How does active transport differ from passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move substances across the cell membrane.