Biology GCSE
isotonic point
What isotonic point means in Biology GCSE, as defined for OCR.
Definition of isotonic point
Check what you remember
Read the wording for your board, then hide it and explain isotonic point in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The point where the curve intersects the horizontal axis, where the external sucrose concentration equals the internal solute concentration of the plant cells.
Topics that use isotonic point
- Transport in and out of cells (OCR GCSE)
Related terms
- cork borer
- line of best fit
- Osmosis
- percentage change in mass
- blotting
- electronic balance
- graduated cylinder
Using isotonic point 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