State the role of the following molecules in respiration: CO3

State the role of the following molecules in respiration: CO3

Expert Solution

In physiology, carbonic acid is described as respiratory acid because it is the only acid excreted as a gas by the lungs. It plays an important role in the bicarbonate buffer system to maintain acid–base homeostasis.

Bicarbonate is an intermediate in the transport of CO2 out of the body by respiratory gas exchange. The hydration reaction of CO2 is generally very slow in the absence of a catalyst, but red blood cells contain carbonic anhydrase, which increases the reaction rate, producing bicarbonate (HCO3−) dissolved in the blood plasma.

This catalysed reaction is reversed in the lungs, where it converts the bicarbonate back into CO2 and allows it to be expelled. The equilibration plays an important role as a buffer in mammalian blood.

gladiator answered 2 years ago

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