Biology A (Salters-Nuffield) A-Level
Fick's Law
What Fick's Law means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Fick's Law
Check what you remember
Read the wording for your board, then hide it and explain Fick's Law in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
The rate of diffusion is proportional to (surface area × concentration difference) ÷ thickness, so changing any of these factors alters the rate.
Topics that use Fick's Law
- Topic 2: Genes and Health (Pearson Edexcel A-Level)
Related terms
Using Fick's Law 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