Biology·MCQ Practice

Breathing and Exchange of Gases — MCQ Practice

NEET UG

Version 1Updated 22 Mar 2026

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Test your knowledge. Click “Solve” to reveal options, select your answer, then check the result. 6 questions available.

Q1medium

Which of the following statements is INCORRECT regarding the transport of gases in human blood?

Q2easy

During inspiration, which of the following events occurs?

Q3easy

The partial pressure of oxygen ( $P_{O_2}$ ) in the alveolar air is approximately:

Q4easy

Which enzyme is responsible for the rapid formation of carbonic acid in red blood cells?

Q5medium

A decrease in the $P_{O_2}$ of the blood, an increase in $P_{CO_2}$ , and a decrease in pH (increased $H^+$ concentration) will cause the oxygen-hemoglobin dissociation curve to shift:

Q6easy

Which of the following is the primary site for the exchange of gases (oxygen and carbon dioxide) in humans?