Science Respiratory System Form 3

1. What is the system that help us breathe?

• Respiratory System

• Excretion System

• Circulatory System

• Digestive System

2. The gas we breathe out is...

• H²O

• O²

• CO²

• He

3. What is the compound in red blood cell?

• Oxyhaemoglobin

• Haemoglobin

• Haemogoblin

• Heamoglobin

4. Where does diffusion happens?

• Bronchiole

• Nostrils

• Trachea

• Alveolus

5. X is...

6. Y.......?

7. Z is...

8. What happens to diaphragm when we breathe in?

2 answers.

• Contracts

• Relaxes

• Move upwards

• Move downwards

9. What is the gas that diffuse and into the blood capillary?

• CO²

• O²

• CO

• SO²

10. What is the name of the process above?

• Excretion

• Exhale

• Inhale

• Diffusion