Biology for IGCSE & O level - Movement Into And Out Of Cells (Section 4 - No. 24)
Which of the following is an example of active transport?
Glucose entering a cell via facilitated diffusion.
Oxygen entering a cell.
Sodium-potassium pump across the cell membrane.
Water moving across a membrane.
Explanation
The sodium-potassium pump moves sodium and potassium ions against their concentration gradients using energy.
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