8 Biology - Unit 1 Respiratory System Quiz

What is the mixture of gases that we inhale called?

• Carbon dioxide

• Nitrogen

• Air

• Oxygen

What is the characteristic of the thorax that must decrease in order for inhalation to occur?

• Air pressure

• Volume

• Temperature

• Humidity

Where does gas exchange take place in humans?

• Bronchi

• Alveolus

• Trachea

• Larynx

What is the function of the diaphragm?

• It filters air

• It changes the volume of the thorax when it contracts

• It produces sound

• It protects the lungs

What is the main organ of the respiratory system that fills the thorax?

• Heart

• Lungs

• Liver

• Kidneys

What is the test for carbon dioxide called?

• Glowing splint

• Limewater

• Litmus test

• Benedict's test

What is the region of the trachea that allows us to speak?

• Pharynx

• Larynx

• Bronchus

• Epiglottis

What is the process carried out by plants which produces their food?

• Respiration

• Photosynthesis

• Fermentation

• Digestion

What are stomata?

• Structures found on the surface of leaves that allow gas exchange to take place

• Large tube that carries air to the lungs

• The amount of space that an object takes up

• The term given to guard cells when they are filled with water

What is the function of the trachea?

• Movement of water up and out of a plant through its stomata

• Large tube that carries air to the lungs

• The area around the outside of an object which can be increased by folding

• When large amounts of blood vessels are present