sodium-potassium pump
What sodium-potassium pump means in Biology A-Level, as defined for AQA.
Definitions of sodium-potassium pump
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Reference: AQA
Pumps in the axon membrane actively transport three sodium ions out for every two potassium ions taken in, using ATP.
Actively removes sodium ions from the epithelial cell into the blood, using ATP to create a concentration gradient.
Topics that use sodium-potassium pump
- Digestion and absorption (AQA A-Level)
- Nerve impulses (A-level only) (AQA A-Level)
Related terms
- absolute refractory period
- amylase and maltose
- axon and dendrites
- bile salts and emulsification
- co-transport
- depolarisation
- differential membrane permeability
- endopeptidases and exopeptidases
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