A = CO_2 is carried in the plasma mainly as H | vedclass

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(C) Assertion $(A)$: About $70\%$ of $CO_2$ is carried in the plasma as bicarbonate ions $(HCO_3^-)$. This statement is true.Reason $(R)$: The enzyme

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Both $A$ and $R$ are true

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(C) Assertion $(A)$: About $70\%$ of $CO_2$ is carried in the plasma as bicarbonate ions $(HCO_3^-)$. This statement is true.Reason $(R)$: The enzyme carbonic anhydrase is present in high concentrations in red blood cells and facilitates the reaction: $CO_2 + H_2O \rightleftharpoons H_2CO_3 \rightleftharpoons H^+ + HCO_3^-$. This enzyme catalyzes the formation of bicarbonate ions. This statement is also true.Since both statements are scientifically accurate and the reason explains the mechanism behind the transport, the correct option is $C$.

$A = CO_2$ is carried in the plasma mainly as $HCO_3^-$ ions.
$R =$ Carbonic anhydrase catalyzes the formation of $HCO_3^-$ ions.

Similar Questions

Refer to the following statements:
$I$. Carbonic anhydrase is present in the erythrocytes.
$II$. In erythrocytes,the carbon dioxide combines with water and is transported.

Select the correct option:
$(1)$ Approximately $97\%$ of $O_2$ is transported by plasma / RBCs.
$(2)$ The primary site of gas exchange is alveoli / bronchioles.

Which of the following combines irreversibly with blood haemoglobin?

The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen by (approx.) (in $\times$)

To which part of $Hb$,$CO_2$ binds?

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$A = CO_2$ is carried in the plasma mainly as $HCO_3^-$ ions.$R =$ Carbonic anhydrase catalyzes the formation of $HCO_3^-$ ions.