Table of Contents
- 1 What is the process of sodium being pumped out of a nerve cell?
- 2 What’s it called when sodium is pumped out of a nerve cell?
- 3 What are the steps of the sodium-potassium pump?
- 4 What is sodium pump?
- 5 What is sodium pump in biochemistry?
- 6 What is the first step of the sodium potassium pumping process?
What is the process of sodium being pumped out of a nerve cell?
The Sodium-Potassium Pump Active transport is the energy-requiring process of pumping molecules and ions across membranes “uphill” – against a concentration gradient. 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.
What’s it called when sodium is pumped out of a nerve cell?
Because it creates this potential difference across the membrane, the sodium-potassium pump is said to be electrogenic. The sodium-potassium pump carries out a form of active transport—that is, its pumping of ions against their gradients requires the addition of energy from an outside source.
What process moves sodium out of the cell?
sodium-potassium pump
Explanation: The sodium-potassium pump uses active transport to move molecules from a high concentration to a low concentration. The sodium-potassium pump moves sodium ions out of and potassium ions into the cell. This pump is powered by ATP.
What pumps sodium out of the cell?
sodium–potassium pump
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.
What are the steps of the sodium-potassium pump?
Terms in this set (5)
- 3 sodium ions bind to the pump.
- A phosphate from ATP is donated to the pump (energy used)
- Pump changes shape and releases sodium ions outside of the cell.
- 2 potassium ions bind to the pump and are transferred into the cell.
- Phosphate group is released and pump returns to its original shape.
What is sodium pump?
1 : a molecular mechanism by which sodium ions are transferred across a cell membrane by active transport especially : one that is controlled by a specialized plasma membrane protein by which a high concentration of potassium ions and a low concentration of sodium ions are maintained within a cell.
What initiates the sodium-potassium pump quizlet?
[The sodium-potassium pump is activated by ATP. This activation allows the pump to transport sodium and potassium ions against their gradients.]
What are the 6 steps involved in a sodium-potassium pump?
Terms in this set (6)
- First 3 sodium ions bind with the carrier protein.
- The cell then splits off a phosphate from ATP to supply energy to change shape of the protein.
- The new shape carries the sodium out.
- The carrier protein has the shape to bind with potassium.
- The phosphate is released and the protein changes shape again.
What is sodium pump in biochemistry?
The sodium pump, also known as the Na+/K+-ATPase, is responsible for establishing and maintaining this electro- chemical gradient in animal cells. This enzyme is a component of the plasma membrane and transports Na+ and K+ using ATP hydrolysis.
What is the first step of the sodium potassium pumping process?
The typical cycle occurs in several steps. First, the pump binds ATP and three sodium ions from the cytoplasm. The ATP then phosphorylates the pump and it shifts in shape, creating an opening towards the outside of the cell. The sodium is released and two potassium ions are picked up.