What is the exact number of K+ ions pumped into the cell per ATP hydrolyzed?

Study for the Manor Preboards Module 2 Test. Use flashcards and multiple choice questions that include hints and explanations. Prepare thoroughly for your exam!

Multiple Choice

What is the exact number of K+ ions pumped into the cell per ATP hydrolyzed?

Explanation:
Two potassium ions are pumped into the cell for each ATP hydrolyzed. The Na+/K+-ATPase uses one ATP to move three Na+ out and two K+ in, cycling through conformations that alternate binding and release of Na+ and K+. This means every ATP used results in 2 K+ ions entering the cell, helping maintain the ion gradients and contributing to the resting membrane potential.

Two potassium ions are pumped into the cell for each ATP hydrolyzed. The Na+/K+-ATPase uses one ATP to move three Na+ out and two K+ in, cycling through conformations that alternate binding and release of Na+ and K+. This means every ATP used results in 2 K+ ions entering the cell, helping maintain the ion gradients and contributing to the resting membrane potential.

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