Definition
- Passage of substances through the cell membrane occurs by three processes: diffusion, passage through channels or carrier proteins, and endocytosis or exocytosis.
Classification of Transport Processes
Classification of membrane transport processes
Class
A. Passive transport
- Types
- Simple diffusion, facilitated diffusion, osmosis, filtration, bulk flow, solvent drag
B. Active transport
- Types
- Primary active transport, secondary active transport
C. Vesicular transport
- Types
- Exocytosis, endocytosis
D. Transport across epithelia
- Types
- Transcellular transport, paracellular transport