Select the descriptions that apply to the sodium-potassium pump. The pump helps to maintain the concentration of sodium and potassium ions in living cells. Sodium ions and potassium ions move into and out of the plasma membrane by osmosis. The concentration gradient of the ions determines the direction of movement through the pump. The pump is an active mechanism for transporting ions through the plasma membrane.
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The pump helps to maintain the concentration of sodium and potassium ions in living cells: This is true, as the sodium-potassium pump is responsible for maintaining the electrochemical gradient across the cell membrane by pumping sodium ions out of the cell and Show more…
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Select all that apply for the sodium/potassium pump: The pump is an ABC transporter that uses energy from ATP (one molecule) to pump potassium ions out of the cell and sodium ions into the cell. The ions create an electric potential that causes the membrane to become polarized. The pump is an ABC transporter that uses energy from ATP (one molecule) to pump sodium ions out of the cell and potassium ions into the cell. Two potassium ions are pumped into the cell for every three sodium ions exported. Two potassium ions are pumped out of the cell for every three sodium ions imported. Two sodium ions are pumped into the cell for every three potassium ions exported.
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All of the following correctly describe the sodium-potassium pump EXCEPT: a. A total of five binding sites are present in the sodium-potassium pump b. Energy is required for the process to take place c. Potassium ions are pumped into the cell, where they are present in lower concentration than the extracellular fluid d. Molecules are pumped from low concentration to high concentration e. The transport proteins will undergo some conformational changes
Adi S.
QUESTION 16 The Na-K ion exchange pump actively transports 3 intracellular sodium ions for 2 extracellular potassium ions. 3 intracellular sodium ions for 1 extracellular potassium ion. 1 intracellular sodium ion for 2 extracellular potassium ions. 2 intracellular sodium ions for 1 extracellular potassium ion. 3 extracellular sodium ions for 2 intracellular potassium ions. QUESTION 17 The gland sits along the superior border of the kidney. thyroid salivary pituitary parathyroid suprarenal
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