Biology A-Level
80S and 70S
What 80S and 70S means in Biology A-Level, as defined for AQA.
Definition of 80S and 70S
Check what you remember
Read the wording for your board, then hide it and explain 80S and 70S in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Eukaryotic ribosomes are 80S, larger than the 70S ribosomes of prokaryotes and chloroplasts.
Topics that use 80S and 70S
- Structure of DNA and RNA (AQA A-Level)
Related terms
- base sequence
- condensation reaction
- evidence and acceptance
- four bases and twenty amino acids
- hydrogen bonds
- messenger RNA
- nuclear pore
- nucleotide structure
Using 80S and 70S 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 A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge