Biology A (Salters-Nuffield) A-Level
Initial rate
What Initial rate means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Initial rate
Check what you remember
Read the wording for your board, then hide it and explain Initial rate in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
Measured from the gradient at the start of the reaction, when substrate concentration is highest and the rate is steepest.
Topics that use Initial rate
- 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 Initial rate 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.
Practise Biology A (Salters-Nuffield) questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Biology A (Salters-Nuffield) A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge