NEET Biology Breathing And Exchange Of Gases Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

Breathing And Exchange Of Gases Topic Based

Question & Answer Discuss:

Which of the following normally contains the highest concentration of oxygen ?

(a) Inhaled air

(b) Body cells

(c) Air in the pulmonary trunk

(d) Blood entering the lungs

Answer: (a)

Inhaled air has not yet exchanged gases with lung capillaries, therefore it contains the highest concentration of oxygen.

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