Biology GCSE
osmosis and water uptake
What osmosis and water uptake means in Biology GCSE, as defined for OCR.
Definition of osmosis and water uptake
Check what you remember
Read the wording for your board, then hide it and explain osmosis and water uptake in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Water enters down a water potential gradient across a partially permeable membrane, as cell sap maintains a lower water potential than soil moisture.
Topics that use osmosis and water uptake
- The challenges of size (OCR GCSE)
Related terms
- active transport of minerals
- arteries
- blood plasma
- boundary layer
- compound measures
- diffusion distances
- double circulatory system
- erythrocyte adaptations
Using osmosis and water uptake 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.
Start free
All Biology GCSE termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge