Gas exchange

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rahmatkat
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Gas exchange

Post by rahmatkat » Mon Oct 19, 2009 3:06 am

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. :?

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mith
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Post by mith » Tue Oct 20, 2009 3:57 am

lookup hemoglobin
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rahmatkat
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Post by rahmatkat » Tue Oct 20, 2009 10:11 am

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.

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canalon
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Post by canalon » Tue Oct 20, 2009 2:10 pm

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

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any proof. (Ashley Montague)

rahmatkat
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Post by rahmatkat » Wed Oct 21, 2009 6:11 am

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

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jwalin
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Post by jwalin » Mon Oct 26, 2009 10:45 am

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
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Post by Darby » Thu Oct 29, 2009 7:32 pm

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

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