Biology·Organisation & maintenance · NSSCO 3.3.3
Active transport
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How cells move particles the 'wrong' way — from low to high concentration, uphill against the gradient — using carrier proteins and energy from respiration.
What you'll learn in this lesson
By the end you should be able to (NSSCO Biology 3.3.3):
- Define active transport as the movement of particles through a cell membrane from a region of lower to a region of higher concentration, against the concentration gradient
- State that active transport uses energy released by respiration
- Explain the role of carrier proteins in active transport
- Discuss the importance of active transport (e.g. ion uptake by root hairs, glucose absorption in the gut)
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