Half Term Biology Quiz

Which organism would have the smallest SA:V

• mouse

• human

• bacteria

• ameoba

Which cells reduce surface tension to stop the lungs collapsing?

• surfactant

• squamous

• macrophages

• alveoli

Which type of fibres make up the walls of the alveoli?

In a countercurrent exchange system the fluids flow the same way.

• True

• False

Which of these is a passive process?

• Inspiration

• Expiration

• Forced expiration

• Forced inspiration

Match the definition- The volume of air breathed in and out in normal resting conditions.

• Tidal volume

• Vital capacity

• Residual volume

• Peak flow

Where does most gas exchange occur in insects?

• Spiracles

• Trachea

• Lungs

• Tracheoles

A circulatory system where blood travels through the heart once in a circuit

• Single

• Double

• Open

• Closed

What are the blood cells that transport oxygen?

• Fibrinogen

• Leukocytes

• Erythrocytes

• Phagocytes

Which of these does not happen during inspiration?

• Diaphragm contracts

• Volume of thorax increases

• Internal intercostal muscles contract

• Pressure of thorax decreases