MCQ
$\rho CO _{2}$ is higher in tissues due to
  • A
    Anabolism
  • Catabolism
  • C
    Building up of carbohydrates
  • D
    Building up of proteins

Answer

Correct option: B.
Catabolism
b
In the tissues, where partial pressure of $CO _{2}$ is high due to catabolism, $CO _{2}$ diffuses into blood ($RBCs$ and plasma) and forms

$HC O _{3}^{-}$and $H ^{+}$. At the alveolar site, where $\rho CO _{2}$ is low, the reaction proceeds in the opposite direction, leading to the formation of $H _{2} O$ and $CO _{2} .$ Thus, $CO _{2}$ gets trapped as bicarbonate at the tissue level and transported to the alveoli and released as $CO _{2}$

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