Body compensates for low oxygen availability | vedclass

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(D) At high altitudes,the partial pressure of oxygen is low,which leads to hypoxia. The body compensates for this in the following ways:$1.$ Increasin

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$I, II$ and $IV$

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(D) At high altitudes,the partial pressure of oxygen is low,which leads to hypoxia. The body compensates for this in the following ways:$1.$ Increasing $RBC$ production: This increases the oxygen-carrying capacity of the blood.$2.$ Decreasing the binding affinity of haemoglobin: This is achieved by an increase in $2,3-$biphosphoglyceric acid $(2,3-BPG)$,which shifts the oxygen-haemoglobin dissociation curve to the right,facilitating the release of oxygen to tissues.$3.$ Increasing the breathing rate: This helps in taking in more oxygen from the environment.Therefore,the correct statements are $I, II,$ and $IV$.

Column-$I$	Column-$II$
$i$. Cellular respiration	$a$. Exchange of gases $O_2$ and $CO_2$ between blood and tissue cells.
$ii$. Breathing	$b$. Physical process of gaseous exchange between atmospheric air and lungs.
$iii$. Internal respiration	$c$. Gaseous exchange between alveolar air and blood capillaries.
$iv$. External respiration	$d$. Food is oxidized and $ATP$ is generated.

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