This study set covers Biology through 3 practice questions. The respiratory system is responsible for gas exchange, primarily taking in oxygen and expelling carbon dioxide. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 3 questions from the Respiratory System Quiz study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the main function of the respiratory system?

A Gas exchange
B Digestion
C Circulation
D Waste removal

2 Which gas does the respiratory system primarily take in?

A Oxygen
B Carbon Dioxide
C Nitrogen
D Hydrogen

3 Which gas does the respiratory system primarily expel?

A Carbon Dioxide
B Oxygen
C Nitrogen
D Helium

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