Gas Exchange

Question 1

Why do we need oxygen?

Answer 1

For aerobic cell respiration, chemical bonds within a glucose molecule are sequentially broken to release energy. Much of the energy is stored as molecules of ATP

Question 2

Ventilation?

Answer 2

Continuously repeating filling our lungs with air and then breath that air out

Question 3

Gas exchange?

Answer 3

The movement (diffusion) of the gases