A-LevelBiologyTransport in plants9700/12 · May/June 2018 · Q261 Mark
What is the role of ATP in a companion cell when sucrose is loaded into a sieve tube element?
Amoving sucrose into the sieve tube element
Bremoving protons from the sieve tube element
Cremoving protons out of the cytoplasm of the companion cell
Dtaking up sucrose into the cytoplasm of the companion cell
✓ Correct answer
C: removing protons out of the cytoplasm of the companion cell
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