Gas exchange and aerobic respiration

Gas exchange is ...

• taking in oxygen and removing carbon dioxide.

• taking in carbon dioxide and removing oxygen.

• taking in oxygen and carbon dioxide.

• removing oxygen and carbon dioxide.

Carbon dioxide in the blood...

• passes into the lungs and is breathed in.

• passes into the lungs and is breathed out.

• small intestine and is digested.

• small intestibe and is excreted.

Write down the gas which passes from the lungs and into the blood.

The place at the end of the lungs where gas exchange between the lungs and blood take splace is called the...

• avengers.

• alves.

• alfresco.

• alveoli.

Lungs are protected by...

• the bib cage.

• the bird cage.

• the fighting cage.

• the rib cage.

After breathing in, air...

• goes into the diaphragm.

• goes into the trachea.

• goes straight to the lungs.

• goes to the ribs.

Another word for breathing in is...

• inhalation.

• exhalation.

• inhabitable.

• exhabitable.

Another word for breathing out is...

• inhalation.

• exhalation.

• inhabitable.

• exhabitable.

When we breathe in...

• there is 16% oxygen and 4% carbon dioxide.

• there is 21% oxygen and 4% carbon dioxide.

• there is 21% oxygen and 0.04% carbon dioxide.

• there is 16% oxygen and 0.04% carbon dioxide.

When we breathe out...

• there is 16% oxygen and 4% carbon dioxide.

• there is 21% oxygen and 4% carbon dioxide.

• there is 21% oxygen and 0.04% carbon dioxide.

• there is 16% oxygen and 0.04% carbon dioxide.