Biology GCSE
ultrastructure
What ultrastructure means in Biology GCSE, as defined for OCR.
Definition of ultrastructure
Check what you remember
Read the wording for your board, then hide it and explain ultrastructure in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Sub-cellular structures revealed by electron microscopy, such as the double membranes and inner cristae of mitochondria, thylakoid grana in chloroplasts, individual ribosomes, and the bilayer of cell membranes.
Topics that use ultrastructure
- Cell structures (OCR GCSE)
Related terms
- approximation
- cell dimensions
- cell membranes
- chloroplasts
- estimation
- field of view
- light microscopy
- magnification calculation
Using ultrastructure 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