Biology A (Salters-Nuffield) A-Level
Positive feedback
What Positive feedback means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Positive feedback
Check what you remember
Read the wording for your board, then hide it and explain Positive feedback in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
A mechanism that amplifies a deviation, moving the system further from the set point.
Topics that use Positive feedback
- Topic 7: Run for your Life (Pearson Edexcel A-Level)
Related terms
- Aerobic respiration
- ATPase
- Biocompatibility
- Carbon dioxide production
- Cellular respiration pathways
- Chemiosmosis
- Coenzymes in respiration
- Electrocardiograms (ECGs)
Using Positive feedback 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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