Question

Which gas passes from the air sacs in the lungs into the blood capillaries? b. Where does this gas pass out of the bloodstream? What is it used for?

Answer 1

Answer:

• Oxygen
• The body cells
• Producing energy

Explanation:

We breathe in oxygen from the external environment. Oxygen passes into our lungs and is passed into the blood capilaries.  Here it is carried to all the cells throughout the body.

It diffuses into the cells and is necessary for the final stages of energy production by aerobic respiration. Therefore, it is necessary for powering all cellular processes.