At which level does the following reaction oc | vedclass

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(C) The reaction $CO_2 + H_2O \rightleftharpoons H_2CO_3 \rightleftharpoons H^+ + HCO_3^-$ is catalyzed by the enzyme carbonic anhydrase.At the tissue

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(C) The reaction $CO_2 + H_2O \rightleftharpoons H_2CO_3 \rightleftharpoons H^+ + HCO_3^-$ is catalyzed by the enzyme carbonic anhydrase.At the tissue level,high $pCO_2$ facilitates the formation of $HCO_3^-$ and $H^+$ ions,which are then transported to the lungs.At the pulmonary (alveolar) level,the reaction proceeds in the reverse direction due to low $pCO_2$,leading to the formation of $CO_2$ and $H_2O$,which is then exhaled.Therefore,this reaction occurs at both the tissue and pulmonary levels.

At which level does the following reaction occur?
$CO_2 + H_2O \rightarrow H_2CO_3 \rightarrow H^+ + HCO_3^-$

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At which level does the following reaction occur?$CO_2 + H_2O \rightarrow H_2CO_3 \rightarrow H^+ + HCO_3^-$