NEET BIOLOGY

ECOLOGY

NEURAL CONTROL AND INTEGRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Sodium-Potassium pump across membrane, actively transports
A
2-Na ions outwards and 3 K ions into the cell
B
3-Na ions outwards and 2 K ions into the cell
C
2-K ions out wards and 3 Na ions into the cell
D
3 K ions outwards and 2 Na ions into the cell
Explanation: 

Detailed explanation-1: -The Na+ K+ pump is an electrogenic transmembrane ATPase first discovered in 1957 and situated in the outer plasma membrane of the cells; on the cytosolic side. [1][2] The Na+ K+ ATPase pumps 3 Na+ out of the cell and 2K+ that into the cell, for every single ATP consumed.

Detailed explanation-2: -The sodium-potassium pump system moves sodium and potassium ions against large concentration gradients. It moves two potassium ions into the cell where potassium levels are high, and pumps three sodium ions out of the cell and into the extracellular fluid.

Detailed explanation-3: -Sodium potassium pump across the resting membrane transports Na ions outside and K ions into the cell.

Detailed explanation-4: -The sodium–potassium pump is found in many cell (plasma) membranes. Powered by ATP, the pump moves sodium and potassium ions in opposite directions, each against its concentration gradient. In a single cycle of the pump, three sodium ions are extruded from and two potassium ions are imported into the cell.

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