carbon dioxide and haemoglobin

[bryanwong]

which is formed when carbon dioxide combines with haemoglobin(some carbon dioxide is carried by haemoglobin)?

my textbook says that,
carboxyhemoglobin is formed ,but i found that carbaminohemoglobin is formed instead on the internet .
which one is correct?

thanks for your answers [/size]

[canalon]

Have you looked up the definition of both on Wikipedia for example. It is quite enlightening. And either you are misreading your textbook, or it is flat out wrong...

[JorgeLobo]

I think you are refering to carbon monoxide not carbon dioxide.

[bryanwong]

Wikipedia says that carbaminohemoglobin is formed
but my textbook says that carboxyhemoglobin is formed
they are both referring to the transport of carbon dioxide
(the way that CO2 combines with haemoglobin)

[canalon]

your textbook is wrong:
http://en.wikipedia.org/wiki/Carbaminohemoglobin
http://en.wikipedia.org/wiki/Carboxyhemoglobin

[JohnMessick]

Carbon dioxide combines reversibly with haemoglobin to form carbaminohaemoglobin. Carbon dioxide does not bind to iron, as oxygen does, but to amino groups on the polypeptide chains of haemoglobin.

Thanks a lot.
John Messick