Diffusion and concentration gradients
What Diffusion and concentration gradients means in Biology GCSE, as defined for AQA.
Definitions of Diffusion and concentration gradients
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain Diffusion and concentration gradients in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A passive process in which particles move from a region of higher concentration to a region of lower concentration down a concentration gradient.
A thin membrane shortens the diffusion path, but a concentration gradient is still required.
Topics that use Diffusion and concentration gradients
- Diffusion (AQA GCSE)
- Trophic levels (AQA GCSE)
Related terms
- Absorption of soluble nutrients
- Algae
- Concentration gradient
- Concentration gradients
- Consumers
- Decomposers
- Diffusion
- Diffusion and metabolic demand
Using Diffusion and concentration gradients 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 questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge