Describe the loading and unloading of oxygen by Haemoglobin in red blood vessels

Haemoglobin is a protein consisting of four haem groups contained in four polypeptide chains. The loading of oxygen consists of oxygen binding to iron in the haem group at areas of higher oxygen concentration such as in the lungs, this is also known as association. The unloading of oxygen is where oxygen unbinds at areas of lower oxygen concentration such as at respiring cells and this is dissociation. When haemoglobin is bound to oxygen, it exists as oxyhaemoglobin.

Answered by Biology tutor

14491 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

The drug Atropine blocks the action of of acetylcholine on structures innervated by post-ganglionic cholinergic neurones.


How may nitrate from fertiliser entering lakes cause the death of fish in fresh water?


Describe and explain how air enters the lungs during inspiration


The development of palm oil plantations in Sumatra has removed areas of forest that provided the habitat for tigers. Explain why planting strips of trees to link the forests would have an effect on the frequency of genetic disorders in these tigers.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences