In the matrix of mitochondria,
the cycle begins,
With acetyl-CoA,
the journey spins.
Two carbons it brings,
to join the fray,
Merging with oxaloacetate,
without delay.
Citrate forms,
a six-carbon friend,
Then isomerizes,
to isocitrate in the end.
Losing CO2,
alpha-ketoglutarate appears,
An enzyme's touch,
another carbon disappears.
Succinyl-CoA,
with energy to share,
Converts to succinate,
with flair.
FAD to FADH2,
electrons flow,
Succinate to fumarate,
in this biochemical show.
Water joins in,
to hydrate with ease,
Malate emerges,
in this cycle's tease.
Last step in the dance,
with NAD+ in sight,
Oxaloacetate returns,
under the mitochondrial light.
Round and round
the cycle goes,
Energy transfers,
life bestows.
In the realm of the Krebs,
the cells find their might,
Powering life,
from morning to night.
