Figure 11- 1 The Neuron
Use Figure 11- 1 to answer the following questions:
-The sodium- potassium ion exchange pump
A) transports sodium ions into the cell during depolarization.
B) moves sodium and potassium opposite to the direction of their electrochemical gradients.
C) depends on a hydrogen gradient for energy.
D) transports potassium ions out of the cell during repolarization.
E) must reestablish ion concentrations after each action potential.

Question

Figure 11- 1 The Neuron
Use Figure 11- 1 to answer the following questions:
-The sodium- potassium ion exchange pump
A) transports sodium ions into the cell during depolarization. 
B) moves sodium and potassium opposite to the direction of their electrochemical gradients. 
C) depends on a hydrogen gradient for energy. 
D) transports potassium ions out of the cell during repolarization. 
E) must reestablish ion concentrations after each action potential.

Quizplus · Accepted Answer

The sodium-potassium pump moves sodium ions out of the cell and potassium ions into the cell, against their electrochemical gradients, using ATP for energy.

Figure 11- 1 the Neuron