Why does oxygen bind to haemoglobin easier the second time?

Binding the first oxygen molecule leads to a change in the tertiary structure of haemoglobinThis uncovers the second haem binding site for another oxygen molecule to attach

Related Biology A Level answers

All answers ▸

Effect of non-competitive inhibitor (on enzyme activity) on enzyme catalysed reaction


How is information contained in the nuclear DNA of a cell converted into proteins? Outline the role of each molecule and enzyme involved in the process.


What is a condensation reaction?


Describe the events that occur leading to an action potential, and briefly explain why it is described as "all or nothing"?