The Sodium Potassium Pump with the Amoeba Sisters

What is one major function of the sodium-potassium pump?

• Aerating the cell

• Generating oxygen

• Maintaining resting membrane potential

• Producing glucose

How many sodium ions bind to the sodium-potassium pump initially?

• One

• Two

• Three

• Four

What happens to the sodium-potassium pump when it is phosphorylated?

• It releases ATP

• It changes shape

• It generates oxygen

• It produces glucose

What is the result of the sodium-potassium pump's activity?

• Equal sodium and potassium inside and outside the cell

• More sodium outside the cell

• More potassium outside the cell

• More sodium inside the cell

What is an electrochemical gradient?

• A difference in temperature across a membrane

• A difference in glucose concentration across a membrane

• A difference in charge and ion types across a membrane

• A difference in pH levels across a membrane

Why is the cell membrane more permeable to potassium at rest?

• Because of more potassium leakage channels

• Because of more sodium leakage channels

• Because of no leakage channels

• Because of equal sodium and potassium leakage channels

What contributes to the cell's more negative charge inside?

• Negative sodium ions traveling out of the cell

• Negative potassium ions traveling into the cell

• Positive sodium ions traveling into the cell

• Positive potassium ions traveling out of the cell