3NT Module 6 Chapter 10 Breathing part I

Breathing is the

We need to breathe to take in

We need to breathe to take in oxygen and remove .................... .......................

The air that we breathe in contains

Oxygen combines with .................... .................. molecules in body cells to release the energy stored in them.

The process where oxygen combines with digested food molecules in body cells to release the energy stored in them is called

.................... ...................... is produced during respiration and

removed when we breathe out.

The air we breathe in is called ...................... ...........

The air we breathe out is called .................... ..............

We can test the presence of carbon dioxide in exhaled air by bubbling it into

Limewater turns

If water vapour is present, dry cobalt chloride paper will turn from .............. .... .............