Page 84 - The Manga Guide to Biochemistry

Only two Maybe not insane
molecules of ATP but definitely
are made after that inefficient.
whole process?

That's insane!

Say what?!

That's a good point. Fructose
Glycolysis is the 6-phosphate

most primitive energy Fructose
production pathway 1,6-bisphosphate
that organisms have.
duuuh... Glycer-
That's why it's so 1,3-Bispho aldehyde
inefficient! phosphat
Aw, poor
little guy.

Phosphoenol- Pyruvate
pyruvate
two molecules

But the fact that glycolysis So there must be a more
requires no oxygen is a notable efficient method of

feature! When oxygen runs producing energy than
out, two molecules of ATP can glycolysis, right?
still be synthesized from one

molecule of glucose.

We don't Purrr
need no
stinking That's correct! As time
oxygen! passed, organisms

This made it an developed two other
extremely important energy pathways that could
production pathway for organisms create ATP much more
in earlier eras, when there was efficiently, this time
less oxygen in the atmosphere. It's
also a vital pathway for anaerobic using oxygen.

organisms* living today. These are the
citric acid cycle
* An anaerobic organism is one that doesn’t require
oxygen for survival. and electron
transport

chain, which we
will discuss
right now!