Question

Complete the following sentence. The operation of the \rm Na^+-K^+ ATPase pump __________.

(a) Moves 2 \rm Na+ to the ECF and 3 \rm K+ to the cytoplasm
(b) Releases 3 \rm K+ to the ECF
(c) Moves 3 \rm N+ to the ECF and 2 \rm K+ to the cytoplasm

Answer 1

The Na+-K+ ATPase pump moves 3 Na+ ions to the extracellular fluid (ECF) and 2 K+ ions to the cytoplasm, essential for maintaining the cell's electrochemical gradient and proper ion concentrations.

Step-by-step explanation:

Complete the following sentence. The operation of the Na+-K+ ATPase pump moves 3 Na+ to the ECF and 2 K+ to the cytoplasm. This biological process is essential for maintaining the electrochemical gradient and the correct concentrations of Na+ and K+ in living cells, which is crucial for various cell functions, including nerve impulse transmission and muscle contraction.

The sodium-potassium pump functions through a cycle where three sodium ions (Na+) are expelled from the cell to the extracellular fluid (ECF), and two potassium ions (K+) are imported into the cytoplasm. This active transport mechanism requires energy derived from ATP, hence the name ATPase. The operation of this pump is vital for sustaining the electrical charge and concentration gradient across the cell membrane.