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BIOLOGY

JAMB 2008 - Question 20

Biology 2008 JAMB Past Questions - Question 20: Exhaled air differs from inhaled air in that it

Choose the most appropriate option for the gap .

Exhaled air differs from inhaled air in that it

A: contains less amount of carbon (IV) oxide

B: is usually lower in temperature

C: often has more oxygen

D: usually has more water vapour.

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Correct Answer

Explanation

D Itis saturated with water vapour, contains more carbon IV oxide 4.1%, less oxygen16% as against 0.03% carbon IV oxide and 21% oxygen in inhaled air.