How many sodium ions (Na+) will be pumped out, when IO-postassium ions (K+) are transported inward of resting member potential.
Correct answer: C. 15
- A. 5
- B. 10
- C. 15
- D. 20
Explanation
The Na+/K+ pump, also known as Na+/K+-ATPase, is crucial in maintaining the resting membrane potential of cells by actively transporting ions against their gradients. It moves 3 sodium ions out of the cell for every 2 potassium ions it brings in. For the inward transport of 10 potassium ions, the pump will export 15 sodium ions to maintain this specific ratio. Options A, B, and D do not reflect this ratio and therefore are incorrect.
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