What is the difference between passive and active transport?
Posted January 25, 2021
The following table outlines the major differences between passive and active transport:
|Molecules move through the cell membrane along the concentration gradient from a region of high concentration to low concentration
|Molecules move through the cell membrane against the concentration gradient from a region of low concentration to high concentration.
|Does not require cellular energy.
|Requires cellular energy in the form of ATP.
|Utilizes carrier proteins.
|Does not utilize any carrier proteins.
|Movement of molecules is bidirectional.
|Movement of molecules is unidirectional.
|Maintains homeostasis between the cytosol and extracellular environment.
|Instrumental in the transport (removal and entrance) of large molecules and insoluble molecules.
|Transports water soluble molecules such as small monosaccharides, lipids, carbon dioxide, oxygen, sex hormones and water
|Transports ions, large proteins, complex sugars and cells.
|Types of passive transport include diffusion, facilitated diffusion and osmosis
|Types of active transport include sodium/potassium pumps, endocytosis and exocytosis.