Biology A-Level
Active loading
What Active loading means in Biology A-Level, as defined for OCR.
Definition of Active loading
Check what you remember
Read the wording for your board, then hide it and explain Active loading in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The process at the source in which sucrose is actively loaded into sieve tube elements, lowering water potential.
Topics that use Active loading
- Transport in plants (OCR A-Level)
Related terms
- Cohesion and adhesion
- Control of environmental variables
- Hydrophyte
- Osmosis
- Potometer
- Rate calculation
- Source-to-sink transport of assimilates
- Surface area to volume ratio in plants
Using Active loading in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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