Tracer experiments
What Tracer experiments means in Biology A-Level, as defined for AQA.
Definition of Tracer experiments
Check what you remember
Read the wording for your board, then hide it and explain Tracer experiments in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Plants supplied with radioactive 14CO2 incorporate 14C into sugars, which are tracked moving through the phloem using autoradiography.
Topics that use Tracer experiments
- Mass transport in plants (AQA A-Level)
Related terms
- cohesion
- companion cells
- Hydrostatic pressure gradients
- Mass flow hypothesis
- Ringing experiments
- Transpiration
- adhesion to the wall
- sieve tube elements and sieve plates
Using Tracer experiments in the exam
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