Introduction to respiratory system MCQ - Practice Questions with Answers

Exchange of O₂ from the atmosphere with CO₂ produced by the cells

Exchange of CO₂ from the atmosphere with O₂ produced by the cells

An anabolic process by which animal cells utilise oxygen, produce carbon dioxide and convert the released energy into ATP

None of these 

Oxygen (O₂) is utilised by organisms to break down simple molecules like glucose, amino acids, fatty acids, etc. 

In animals, carbon dioxide (CO₂) which is harmful gas is released during respiration

The process of exchange of O₂ from the atmosphere with CO₂ produced by the cells is called breathing

All of these

A catabolic process by which animal cells utilise carbon dioxide, produce oxygen and convert the released energy into ATP.

A catabolic process by which animal cells utilize oxygen, produce carbon dioxide and convert the released energy into ATP.

An anabolic process by which animal cells utilise oxygen and carbon dioxide to form ATP.

An anabolic process by which animal cells utilise oxygen, produce carbon dioxide and convert the released energy into ATP.

Buccal cavity 

Gills 

Simple diffusion 

Trachea