Physiology In Na+-K+ ATPase, K+ binds onto A Extracellular binding site on b subunit B Intracellular binding site on b subunit C Extracellular binding site on a subunit D Intracellular binding site on a subunit 💡 Explanation In Na+-K+ ATPase, K+ binds onto ✓ Correct Answer: C. Extracellular binding site on a subunit