Why Is the Sodium-Potassium Exchange Pump Said to Be Electrogenic

question 42

Multiple Choice

Why is the sodium-potassium exchange pump said to be electrogenic?

• A) Because it transports the same number of positively charged ions in and out of the cell membrane
• B) Because it transports unequal numbers of sodium and potassium ions across the membrane
• C) Because ion binding requires a change in membrane potential
• D) Because ion transport can only be triggered by electrical stimuli
• E) Because it has an electroneutral stoichiometry

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