Page 78 - The Manga Guide to Biochemistry
P. 78

Why Do We Need to Breathe?                             ...but do you
                                                        know why?
   As you know, human
beings are constantly

          breathing...

Yes! It's because we must take in
 the oxygen contained in the air

      and expel carbon dioxide.

                                     Wha?!

    That's right. But, more                 Hmmm...
   specifically, our cells
require oxygen to create                    So to put it another way, we need
 the energy they need to                    oxygen to make energy from the

            keep us alive.                                     food we eat!

                                                 So      Eat          Create  Healthy
                                            hungry...  dinner         energy      and

                                                                              strong!

                                                       needs oxygen

                "Gotta create more
             ATP today! I need some
             nutrients and oxygen!"

          Oxygen is absolutely
                necessary for

        decomposing glucose
     and extracting its energy.

64 Chapter 2
   73   74   75   76   77   78   79   80   81   82   83