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  • Sodium and potassium ions move in and out of the axon when the membrane . . .
    Trinity C asked • 01 16 19 Sodium and potassium ions move in and out of the axon when the membrane is
  • After the action potential passes through an axon, what . . . - Wyzant
    That will eliminate two of your answers right there At the beginning of an action potential, the Na gates open and sodium flows INTO the cell Repolarization (return to resting potential) occurs when the K (potassium) channels open and allow K ions to go back out of the cell
  • Drawing Exercise – Resting Potential, Action Potential . . . - Wyzant
    1 Sketch out a large neuron 2 Add to the soma sodium potassium pumps in the cell membrane, as well as the distribution of ions, showing the state of the cell membrane at the resting membrane potential 3 In the axon, draw sodium channels and draw the distribution and movement of sodium ions during depolarization 4
  • At rest, the interior of a neuron is negatively charged . . . - Wyzant
    Hi Emily, thanks for the question The answer is proteins With exception of potassium ions, all ions (that pertain to membrane potential) have a higher concentration outside of the cell, than inside However, nucleic acids are super negatively charged, and proteins tend to have a net negative charge, as well
  • TOXINS AND Na+ channels | Wyzant Ask An Expert
    Then potassium channels open up as well; there is much more potassium inside the neuron than outside, so it will go from high to low concentration - from inside the neuron to outside Sodium and potassium are both charged ions, 1+ So when a neuron depolarizes and sodium comes in the charge gets much higher, very quickly
  • Osmosis - cell transport | Wyzant Ask An Expert
    A hypertonic solution is a solution with a higher concentration of dissolved substances than is found inside the cell If a cell is surrounded by hypertonic solution, then water will move OUT of the cell by osmosis because there is a higher concentration of water inside the cell compared to outside (where there is lots of dissolved salt, etc )
  • passive transport does not require energy because it follows the . . .
    Active transport requires ATP to pump molecules up the concentration gradient This occurs from low to high concentration Movement of proteins, ions, large cells, and complex sugars requires active transport
  • What are the Ions and Formula for Sodium Sulfate?
    Sodium sulfate is a chemical compound composed of sodium ions and sulfate ions Its formula and ionic components are as follows: Sodium ions (Na⁺): Sodium forms a monovalent cation with a +1 charge Sulfate ions (SO₄²⁻): Sulfate is a polyatomic ion with a -2 charge The chemical formula for sodium sulfate is Na₂SO₄
  • A symporter moves glucose and sodium from extracellular fluids . . . - Wyzant
    ATP is used to move sodium outside of the cell (using a separate protein) creating a concentration gradient (more sodium outside, less sodium inside) Therefore, the sodium flows back into the cell without the use of ATP through the symporter and brings a glucose along with it 1 ) Glucose would be moving against its gradient into the cell
  • Active transport in cells? | Wyzant Ask An Expert
    Also, most active transport systems are only one way--either into or out of the cell For example, the Na+ pump transports sodium ions out of the cell Therefore we can say there are active transport systems that transport material into the cell only and other systems that transport other materials out of the cell





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