Human Body: Respiratory System Quiz

What is respiration?

• A chemical process to release energy from food

• A process to digest food

• A method of sleeping

• A way to grow plants

Which gas do organisms take in during respiration?

• Carbon dioxide

• Hydrogen

• Oxygen

• Nitrogen

What is produced as a waste gas during respiration?

• Hydrogen

• Carbon dioxide

• Oxygen

• Nitrogen

Which part of the respiratory system is responsible for gas exchange?

• Trachea

• Alveoli

• Diaphragm

• Bronchus

What is the main function of the respiratory system?

• To supply oxygen to the blood

• To pump blood

• To digest food

• To produce hormones

What does the diaphragm do?

• Stores oxygen

• Produces energy

• Filters blood

• Helps in breathing

Which part of the respiratory system connects the throat to the lungs?

• Bronchus

• Nose

• Alveoli

• Trachea

What is the role of the lungs in the respiratory system?

• To produce hormones

• To digest food

• To absorb nutrients

• To exchange gases

What happens to oxygen in the cells of the body?

• It is released as waste

• It combines with nutrients to provide energy

• It is stored for later use

• It is converted to carbon dioxide

What is the function of the bronchus?

• To absorb oxygen

• To carry air to the lungs

• To produce carbon dioxide

• To filter air