A-LevelBiologyTransport in plantsMay/June 2022Paper 1 Q291 Mark
Which row shows the correct sequence for the movement of sucrose into phloem sieve tubes?
Adiffusion of sucrose into the
companion cell cytoplasm
active transport of protons
into the companion
cell cytoplasm
cotransport of protons and
sucrose into the sieve tubes
Bcotransport of protons and
sucrose into the companion
cell cytoplasm
active transport of protons
out of the companion
cell cytoplasm
diffusion of sucrose into
the sieve tubes
Cactive transport of protons
into the companion
cell cytoplasm
diffusion of sucrose into the
companion cell cytoplasm
cotransport of protons and
sucrose into the sieve tubes
Dactive transport of protons
out of the companion
cell cytoplasm
cotransport of protons and
sucrose into the companion
cell cytoplasm
diffusion of sucrose into
the sieve tubes
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of transport in plants within the Biologysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep