Biology 9700 · AS & A Level · Movement into and out of cells

Movement into and out of cells — practice question

Several processes involved in the loading of sucrose into companion cells are listed below. Which one is an active process?

  • Athe movement of $\text{H}^+$ ions from companion cells
  • Bthe movement of $\text{H}^+$ ions into companion cells
  • Cthe movement of sucrose from companion cells
  • Dthe movement of sucrose into companion cells

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