Page 92 - The Manga Guide to Biochemistry
P. 92
And that... ...concludes my Hooray!
explanation of
Ahem
respiration.
Remember, if we express this It's much more meaningful after
respiration reaction in a chemical learning the details. It feels like
formula, we get the following, we finished a long journey...
which we saw earlier.
glucose Oxygen Water carbon Water Energy
dioxide
By the way, if we replace the “38 ATP
molecules” with "light energy" and Whoa! It's photosynthesis!
reverse the arrow’s direction what Amazing!
do you think we'll get? light
energy
glucose Oxygen Water
carbon Water
dioxide
Through this
process, starting
with 1 molecule
of glucose...
glucose glycolysis citric acid electron
cycle transport
chain
A total of molecules are produced from 1 glucose.
Glycolysis, the citric acid cycle, and the electron
transport chain combined create 38 molecules of ATP,
which becomes the energy for the activity of our cells.*
* The NADH produced during glycolysis cannot enter mitochondria on its own. Instead, it passes its electrons
to a "shuttle" called glycerol 3-phosphate. Glycerol 3-phosphate passes its e- to FAD+ in the mitochondrial
membrane, and FADH2 is created. When FADH2 deposits its e- into the electron transport chain, one step in the
chain is skipped, and one less ATP is formed (two less per glucose), so the net ATP produced is 36.
78 Chapter 2
