ALL meanings of active transport

ac·tive trans·port
A a
  • noun active transport a process by which molecules are enabled to pass across a membrane from a region in which they are in a low concentration to one of high concentration; this requires the expenditure of energy in metabolism and is assisted by carrier proteins, commonly referred to as pumps 3
  • noun active transport the passage of ions or molecules from one side of a cell membrane to another in opposition to inhibiting conditions, as osmotic equilibrium, by means of energy released in cell metabolism 3
  • noun active transport the movement of ions or molecules across a cellular membrane from a lower to a higher concentration, requiring the consumption of energy. 1
  • noun active transport (transportation planning) Walking and cycling as means of travel. 0
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