saturation
What saturation means in Biology A-Level, as defined for AQA.
Definition of saturation
Check what you remember
Read the wording for your board, then hide it and explain saturation in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
The rate plateaus once all carrier proteins are saturated, because they are occupied and cannot work faster.
Topics that use saturation
- Transport across cell membranes (AQA A-Level)
Related terms
- active transport
- betalain pigment leakage
- calibration curve
- colorimetry and absorbance
- cristae
- Fluid mosaic model
- glycoproteins and glycolipids
- hydrophilic heads and hydrophobic tails
Using saturation 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