Active/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 along the concentration gradient.

Front

Define Osmosis.

Back

The diffusion of water molecules through a selectively permeable membrane.

Front

What role does the Cell Membrane play in a cell?

Back

It regulates what enters and leaves the cell, maintaining homeostasis.

Front

What is Exocytosis?

Back

A form of active transport where materials are expelled from the cell.

Front

What is Endocytosis?

Back

A form of active transport where cells engulf materials from the outside environment.

Front

What is Diffusion?

Back

The process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What is the Concentration Gradient?

Back

The difference in the concentration of a substance across a space.

Front

What is the main difference between Active and Passive Transport?

Back

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

Front

What is facilitated diffusion?

Back

A type of passive transport that uses transport proteins to help move substances across the cell membrane.