Active and Passive Transport

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.

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

What is Diffusion?

Back

The process by which molecules move from an area of high concentration to an area of low concentration.

Front

What is Osmosis?

Back

The diffusion of water molecules through a selectively permeable membrane.

Front

What is Homeostasis?

Back

The process by which a cell or organism maintains a stable internal environment.

Front

Does Passive Transport require energy?

Back

No, passive transport does not require energy.

Front

What is an example of Active Transport?

Back

The sodium-potassium pump, which moves sodium ions out of and potassium ions into the cell.

Front

What is an example of Passive Transport?

Back

Diffusion of oxygen into cells from the bloodstream.

Front

What is the role of the cell membrane in transport?

Back

The cell membrane controls what enters and exits the cell, facilitating both active and passive transport.

Front

What happens to a cell in a hypertonic solution?

Back

The cell loses water and may shrink due to osmosis.