four polypeptide chains
What four polypeptide chains means in Biology A-Level, as defined for AQA.
Definition of four polypeptide chains
Check what you remember
Read the wording for your board, then hide it and explain four polypeptide chains in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Each folded into its own tertiary structure and each holding one haem group containing an iron ion.
Topics that use four polypeptide chains
- Mass transport in animals (AQA A-Level)
Related terms
- affinity
- affinity for oxygen
- atrial systole
- Atrioventricular valves
- biconcave disc
- Biological drawing conventions
- Bohr effect
- Causation
Using four polypeptide chains 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.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge