Vacuoles · Botany

Which ions are actively pumped into the vacuole to drive the osmotic intake of water?

  1. Protons and Potassium
  2. Iron and Magnesium
  3. Oxygen and Carbon dioxide
  4. Nitrogen and Phosphorus
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Correct answer: Protons and Potassium

V-type ATPases and pyrophosphatases pump protons into the vacuole, creating an electrochemical gradient. This gradient is then used by transporters to move ions like potassium and chloride into the cell sap.

Difficulty: Medium Question 7 of 20

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