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
