0
What is the concentration of sodium ions inside the cell is usually than the concentration of sodium ions outside the cell?
Wiki User
∙ 12y ago
Extracellulary, Sodium is major ion. Intracellular concentration of sodium is: 12 mEq/L
Extracellular concentration of sodium is: 140 mEq/L
Intracellularly, Potassium is major ion.
Intracellular concentration of Potassiumis: 140 mEq/L
Extracellular concentration of Potassiumis: 3.5-5 mEq/L
These concetrations are maintained by Na+/K+ ATPase.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
The inside of cells have a higher concentration of what?
The inside of cells have a higher concentration of Potassium. But there's a higher concentration of Sodium outside the cell.
What is the concentration of sodium in a neuron?
its about 10mM inside and 140 mM outside the cell.
Which describes the ion concentrations inside and outside of a neuron?
The sodium ion concentration is higher on the outside of the cell and potassium ion concentration is higher on the inside of the cell
How does the inside of the resting neuron compare to the outside in terms of electrical charge and Na plus concentration?
The concentration of negatively charged proteins and positively charged potassium ions, K+, is greater inside the cell than outside. In contrast, the concentration of sodium ions, Na+, is greater outside the cell than inside. The concentrations of Na+ and K+ ions are partly due to the action of the sodium-potassium pump, which actively moves Na+ out of cells while moving K+ in.
Movement of sodium ions from a region of lower concentration inside a cell toward a region of higher concentration outside the cell is accomplished by?
active transport
What causes the inside of neuron becomes positive?
Outside a neuron, there are mostly sodium ions but some potassium ions. Inside the neuron, there are only potassium ions. Since both sodium and potassium are positive ions, and they are in a higher concentration outside the cell, that makes the outside have a more positive charge than the inside. But for all intents and purposes, the outside is positive, and the inside is negative. When the sodium ions (Na+) rush into the cell during depolarization, it causes the concentration of positive ions inside the cell to go WAY up, making the inside more positive than the outside. This means that the outside is now negative and the inside now positive.
How does the amount of ATP affect the concentration of amino acids outside of the cell relative to inside of the cell?
The lower the amount of ATP, especially if there is none present, the concentration of amino acids outside of the cell will be much greater than on the inside, because amino acids need to be aided by a sodium ion. Sodium is pumped outside of the cell (where the amino acids are) by the sodium-potassium pump which needs ATP to function; therefore, if there is no ATP, the pump will not operate, there will be no sodium ions on the outside to aid amino acids into the cell.
What is the state when an electrical charge of a neuron is said to be at a resting potential?
The resting potential is the normal equilibrium charge difference (potential gradient) across the neuronal membrane, created by the imbalance in sodium, potassium, and chloride ions inside and outside the neuron.
Is calcium more concentrated inside or outside the cell?
Overall none, or the cell would swell or shrink until the osmotic pressure becomes the same. But : most of the sodium is outside & most of the potasium is inside. most of the proteins are inside most of the sugar is outside (depending on insulin).
If there is more sodium inside a cell than outside which process could the cell use to to take in more sodium?
Active transport moves a substance across a membrane UP it's concentration gradient.
Is there more sodium inside a cell than outside which process could the cell use to take in more sodium?
Active transport moves a substance across a membrane UP it's concentration gradient.
If there is more sodium inside a cell than outside which process could the cell use to take in more sodium?
Active transport moves a substance across a membrane UP it's concentration gradient.
