What will be the ${\rm{p}}{{\rm{O}}_{\rm{2}}}$ and ${\rm{pC}}{{\rm{O}}_{\rm{2}}}$ in the atmospheric air compared to those in the alveolar air?

${\rm{p}}{{\rm{O}}_{\rm{2}}}$ higher, ${\rm{pC}}{{\rm{O}}_{\rm{2}}}$ lesser

${\rm{p}}{{\rm{O}}_{\rm{2}}}$ lesser, ${\rm{pC}}{{\rm{O}}_{\rm{2}}}$ higher

${\rm{p}}{{\rm{O}}_{\rm{2}}}$ higher, ${\rm{pC}}{{\rm{O}}_{\rm{2}}}$ higher

${\rm{p}}{{\rm{O}}_{\rm{2}}}$ lesser, ${\rm{pC}}{{\rm{O}}_{\rm{2}}}$ lesser

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NEET UG BIOLOGY MCQ: BREATHING AND EXCHANGE OF GASES

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Understanding +4 | -1

What will be the

\mathrm{p}{\mathrm{O}_\mathrm{2}}

and

\mathrm{pC}{\mathrm{O}_\mathrm{2}}

in the atmospheric air compared to those in the alveolar air?

View answer and explanation

Correct option: B

\mathrm{p}{\mathrm{O}_\mathrm{2}}

higher,

\mathrm{pC}{\mathrm{O}_\mathrm{2}}

lesser

Option B (

\mathrm{p}{\mathrm{O}_{\mathrm{2}}}

higher,

\mathrm{pC}{\mathrm{O}_{\mathrm{2}}}

lesser) is correct because atmospheric air has a higher partial pressure of oxygen and a lower partial pressure of carbon dioxide compared to alveolar air.

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