Biology A-Level
common first stage
What common first stage means in Biology A-Level, as defined for AQA.
Definition of common first stage
Check what you remember
Read the wording for your board, then hide it and explain common first stage in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Glycolysis is the first stage of both anaerobic and aerobic respiration, the one stage common to both.
Topics that use common first stage
- Respiration (A-level only) (AQA A-Level)
Related terms
- active transport
- anaerobic stage
- ATP hydrolase
- continuation of glycolysis
- ethanol and carbon dioxide
- Krebs cycle
- limited NAD pool
- link reaction
Using common first stage 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