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Choose characteristics of the sodium-potassium ion pump.Multiple select question.Pumps sodium out of the cell against its concentration gradientUses ATPIs an example of passive transportPumps potassium along its concentration gradient

Question

Choose characteristics of the sodium-potassium ion pump.Multiple select question.Pumps sodium out of the cell against its concentration gradientUses ATPIs an example of passive transportPumps potassium along its concentration gradient

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Solution

The characteristics of the sodium-potassium ion pump are:

  1. Pumps sodium out of the cell against its concentration gradient: This is true. The sodium-potassium pump moves sodium ions out of the cell, even though the concentration of sodium ions is higher outside the cell. This is against the concentration gradient.

  2. Uses ATP: This is also true. The sodium-potassium pump is an active transport mechanism, which means it requires energy to function. This energy is provided by ATP (adenosine triphosphate).

  3. Is an example of passive transport: This is false. As mentioned above, the sodium-potassium pump is an example of active transport, not passive transport. Passive transport does not require energy and moves substances along their concentration gradient, not against it.

  4. Pumps potassium along its concentration gradient: This is false. The sodium-potassium pump moves potassium ions into the cell, even though the concentration of potassium ions is higher inside the cell. This is against the concentration gradient.

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