Page 89 - The Manga Guide to Biochemistry

I remember! It was Yes, But the While the flow of electrons
photosynthesis! The constituent protein is the same, each of those
electron transport "weird shapes" is different,
chain also appeared complexes are and they all perform
different for different tasks too.
there, right? photosyntehsis.
Yup, those shapes look
etolrefacnptshrpoootnrotscynhtahinesis different alright!

Now, let's get back to Pyruvate citric
NADH and FADH2. acid
cycle
Four molecules of
NADH and one molecule glucose

of FADH2 are created Pyruvate citric
from one molecule acid
cycle
of pyruvate.

When converting from one
molecule of glucose, eight
molecules of NADH and two
molecules of FADH2 are created
by the citric acid cycle alone.

NADH and FADH2 are synthesized in the The protons and
citric acid cycle when hydrogen atoms electrons that
were deposited
are delivered to both NAD+ and FAD. in NAD+ and FAD
Since a hydrogen atom consists of a will then exhibit
single proton and a single electron... their power in

hydrogen atom ...this means that a proton and the electron
= proton + an electron are deposited transport
electron in "temporary custody" of chain.
NAD+ or FAD.*

depositing for storage!

Proton Proton

In photosynthesis, a
proton and an electron

were deposited into
NADP to form NADPH.

* In other words, NAD+ or FAD is "reduced," and NADH or FADH2 is created.
(See page 37 for an explanation of reduction.)
Photosynthesis and Respiration 75