PHYSIOLOGY
NEUROTRANSMISSION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
sodium ions out and potassium ions in
|
|
|
sodium ions in and potassium ions out
|
|
|
sodium and potassium ions in
|
|
|
sodium and potassium ions out
|
Detailed explanation-1: -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-2: -The sodium-potassium pump cycle The sodium-potassium pump transports sodium out of and potassium into the cell in a repeating cycle of conformational (shape) changes. In each cycle, three sodium ions exit the cell, while two potassium ions enter.
Detailed explanation-3: -The sodium-potassium pump moves sodium ions (Na+) out of the cell and potassium ions (K+) into the cell. First, three sodium ions bind with a carrier protein in the cell membrane. Then, the carrier protein receives a phosphate group from ATP. When ATP loses a phosphate group, energy is released.