Gas exchange

[rahmatkat]

Can somebody help me with this homework question, it was like this:
"Explain the role of haemoglobin in the gas transport, particularly the significance of the reversible binding reaction?"
I'll be grateful with your help.

[mith]

lookup hemoglobin

[rahmatkat]

I understand the role of haemoglobin in gas transport cause i have look it up in the internet, it's the significant of the reversible binding reaction that i cant find, that why i asked for help.

[canalon]

Read about Carbon monoxide poisoning, and that will help you figure out what is happening when there is no reversible binding...

[rahmatkat]

Thanks for the tip, i now have the information I want.

[jwalin]

haemoglobin has an fe atom this changes its oxidation state from +2 to +3 in presence of oxygen.
and in absence of oxygen the state of Fe goes back to +2 releasing oxygen
hope it helps
have any doubts do get back

[Darby]

The affinity (binding strength) changes according to pH, and excess carbon dioxide (bicarbonate in blood) changes the local pH, loosening the hold on oxygen.