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what is the role of carbonic anhydras...

what is the role of carbonic anhydrase in humans ? Where is it operative ?

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Nearly 70% of `CO_(2)` enters the R.B.Cs and reacts with water to form carbonic acid in the presence of enzyme carbonic anhydrase . The carbonic acid dissociates to form bicarbonate ions which are circulated by plasma.
`CO_(2) +H_(2)O overset("Carbonic")underset("Anhydrase")(hArr) underset("Carbonic acid ")(H_(2) CO_(3))`
`H_(2) CO_(3) hArr HCO_(3)^(-) +H^(+)`
`K.HbO_(2) hArr K.Hb +O_(2)`
`H^(+) +HCO_(3)^(-) +K.Hb hArr H.Hb +KHCO_(3)`
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