Respiratory System Quiz

What is the primary function of the respiratory system?

• Digestion of food

• Exchange of gases

• Circulation of blood

• Production of hormones

Which gas is carried into the body by the respiratory system?

• Nitrogen (N2)

• Carbon dioxide (CO2)

• Oxygen (O2)

• Helium (He)

What is the process of carrying oxygen into the body and excreting carbon dioxide called?

• Photosynthesis

• Gas exchange

• Metabolism

• Filtration

What is the primary function of the respiratory system?

• Digestion of food

• Exchange of gases

• Circulation of blood

• Production of hormones

Which gas is carried into the body by the respiratory system?

• Nitrogen (N₂)

• Oxygen (O₂)

• Helium (He)

• Methane (CH₄)

What is the process of carrying oxygen into the body and excreting carbon dioxide called?

• Photosynthesis

• Gas exchange

• Fermentation

• Combustion

How does the respiratory system help in regulating pH levels?

• By producing hormones

• By maintaining a constant acid-base balance

• By digesting food

• By circulating blood

Tags

NGSS.HS-LS1-3

What protective function does the respiratory system serve?

• It filters out airborne pollutants and microorganisms

• It digests food

• It circulates blood

• It produces energy

Which of the following is NOT a main organ of the respiratory system?

• Nose

• Heart

• Larynx

• Trachea

What is the function of the organs in the respiratory system?

• To digest food

• To carry air into and out of the lungs

• To pump blood

• To filter waste from the blood