Biology A (Salters-Nuffield) A-Level
Efficiency
What Efficiency means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Efficiency
Check what you remember
Read the wording for your board, then hide it and explain Efficiency in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
The useful biomass or energy passed to the next trophic level compared with the amount available at the previous level, expressed as a percentage.
Topics that use Efficiency
- Topic 5: On the Wild Side (Pearson Edexcel A-Level)
Related terms
- Abiotic factors
- Abundance
- Allele frequency
- Allopatric speciation
- Anthropogenic causes of climate change
- ATP as universal energy currency
- Biomass units
- Biotic factors
Using Efficiency in the exam
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