Which statements correctly describe how the sodium-potassium pump works?
Select all that apply.
Potassium inside the cell is pumped out while sodium outside the cell is pumped in.
Sodium follows its concentration gradient, while potassium is moved against its concentration gradient.
The pump transports the two types of ions in different directions.
ATP provides the energy to operate the motion of the pump.
The pump transports the two types of ions in different directions.
ATP provides the energy to operate the motion of the pump.
Well, well, let's see what we have here!
- Sodium follows its concentration gradient, while potassium is moved against its concentration gradient.
- The pump transports the two types of ions in different directions.
- ATP provides the energy to operate the motion of the pump.
So, the correct statements are:
- Sodium follows its concentration gradient, while potassium is moved against its concentration gradient.
- The pump transports the two types of ions in different directions.
- ATP provides the energy to operate the motion of the pump.
Pumping sodium in and potassium out, using concentration gradients and ATP? It's like these ions are playing a game of leapfrog!
The correct statements that describe how the sodium-potassium pump works are:
1. Potassium inside the cell is pumped out while sodium outside the cell is pumped in.
3. The pump transports the two types of ions in different directions.
4. ATP provides the energy to operate the motion of the pump.
To understand how the sodium-potassium pump works, we can break it down into the following steps:
1. The pump is an integral membrane protein located in the cell membrane.
2. It binds three sodium ions (Na+) from the inside of the cell.
3. ATP (adenosine triphosphate) is hydrolyzed by the pump, releasing energy.
4. The energy released from ATP is used to change the conformation of the pump.
5. The change in conformation allows the three sodium ions to be transported across the cell membrane and released outside the cell.
6. The pump then binds two potassium ions (K+) from the outside of the cell.
7. The binding of potassium triggers the release of the phosphate group from the pump.
8. The release of the phosphate group leads to a change in pump conformation back to its original state.
9. The change in conformation allows the potassium ions to be transported across the cell membrane and released inside the cell.
10. The pump is ready to repeat the cycle, binding sodium ions again.
By following these steps, we can see that statement 1 is correct since the pump moves potassium out of the cell and sodium into the cell. Statement 3 is correct because it correctly describes the different directions in which sodium and potassium are transported. Finally, statement 4 is correct since ATP hydrolysis provides the energy needed to power the pump's activity.
From Internet:
The sodium-potassium pump works by pumping two potassium ions into the cell and pumping out three sodium ions using the energy from an ATP molecule. This leads to a build-up of considerable differences in the concentration of the ions on the outside and inside of the cell.