Breathing - prior understanding

Select all answers that are true.

The air is made up from:

• One type of gas, called Air.

• Oxygen gas

• Carbon dioxide gas

• Nitrogen gas

When you breathe in, your body absorbs and uses one of the gases found in the air.

What is it called?

Select all answers that are true.

Which of these living things need oxygen to stay alive?

• You

• Your lungs

• Your lung cells

• Your blood cells

• Your muscle cells

How is oxygen transported to all the cells of your body?

• Through your blood

• Through your stomach

• Through air tubes in your body

Select all answers that are true.

Which of these living things produce waste?

(such as carbon dioxide gas)

• You

• Your lungs

• Your lung cells

• Your blood cells

• Your muscle cells

What is the name of organ D in this diagram?

• Lung

• Trachea

• Nose

• Diaphragm