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Questions and Answers
What is the primary function of the sodium-potassium pump?
What is the primary function of the sodium-potassium pump?
- To break down ATP into smaller molecules
- To maintain a higher concentration of sodium ions inside the cell
- To generate action potentials in neurons
- To transport sodium ions out of the cell and potassium ions into the cell (correct)
What is the energy source used by the sodium-potassium pump?
What is the energy source used by the sodium-potassium pump?
- Phosphate group
- Sodium ions
- ATP (correct)
- ADP
What is the result of the sodium-potassium pump's activity on the resting membrane potential?
What is the result of the sodium-potassium pump's activity on the resting membrane potential?
- It becomes more positive
- It becomes slightly more negative (correct)
- It remains unchanged
- It becomes highly negative
What is the process by which ATP transfers a phosphate group to the pump?
What is the process by which ATP transfers a phosphate group to the pump?
How many sodium ions are transported out of the cell during each cycle of the pump?
How many sodium ions are transported out of the cell during each cycle of the pump?
What is the purpose of maintaining a higher concentration of sodium ions outside the cell?
What is the purpose of maintaining a higher concentration of sodium ions outside the cell?
What is the effect of the sodium-potassium pump on the concentration of potassium ions inside the cell?
What is the effect of the sodium-potassium pump on the concentration of potassium ions inside the cell?
What is the purpose of the sodium-potassium pump in neurons?
What is the purpose of the sodium-potassium pump in neurons?
What is the binding ratio of sodium to potassium ions during each cycle of the pump?
What is the binding ratio of sodium to potassium ions during each cycle of the pump?
What is the primary composition of the cell membrane where the sodium-potassium pump operates?
What is the primary composition of the cell membrane where the sodium-potassium pump operates?
What is the direction of ion transport during the sodium-potassium pump's activity?
What is the direction of ion transport during the sodium-potassium pump's activity?
What is the significance of the sodium-potassium pump's activity in maintaining the electrochemical gradient?
What is the significance of the sodium-potassium pump's activity in maintaining the electrochemical gradient?
Which of the following is an indirect consequence of the sodium-potassium pump's activity?
Which of the following is an indirect consequence of the sodium-potassium pump's activity?
What is the net result of the sodium-potassium pump's activity on the membrane potential?
What is the net result of the sodium-potassium pump's activity on the membrane potential?
What is the significance of the sodium-potassium pump in nerve impulse transmission?
What is the significance of the sodium-potassium pump in nerve impulse transmission?
What is the primary function of the electrochemical gradient created by the sodium-potassium pump?
What is the primary function of the electrochemical gradient created by the sodium-potassium pump?
What is the direction of ion movement in active transport?
What is the direction of ion movement in active transport?
What is the role of carrier proteins in the sodium-potassium pump?
What is the role of carrier proteins in the sodium-potassium pump?
What is the consequence of the influx of calcium ions in the axon terminal of the presynaptic cell?
What is the consequence of the influx of calcium ions in the axon terminal of the presynaptic cell?
What is the result of the sodium-potassium pump's activity on the cell membrane?
What is the result of the sodium-potassium pump's activity on the cell membrane?
What is the significance of the sodium-potassium pump in nerve impulse transmission?
What is the significance of the sodium-potassium pump in nerve impulse transmission?
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