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

Movement into and out of cells — practice question

During sucrose loading into a sieve tube element, what function does ATP serve in a companion cell?

  • Amoving sucrose into the sieve tube element
  • Bremoving protons out of the cytoplasm of the companion cell
  • Cremoving protons from the sieve tube element
  • Dtaking up sucrose into the cytoplasm of the companion cell

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