Question

In a laboratory, a neuron is placed in a dish containing fluid that contains more potassium than the neuron's cytoplasm. considering this, select all that are true. potassium will leak into the cell. the electrical charge inside the cell will become more positive than normal. the sodium-potassium pump will be moving potassium from a higher to a lower concentration. the membrane potential will become more positive than normal.

Answer 1

The sodium concentration is higher outside the cell than inside the cell and the potassium concentration is higher inside the cell than outside the cell.

Because the sodium-potassium exchange pump moves sodium and potassium ions in opposite directions, the pump generates concentration gradients for these ions that are opposite in direction.