Carbon dioxide
Carbon dioxide
The waste product of the Krebs cycle is carbon dioxide (CO2). CO2 is produced during the process of cellular respiration as a byproduct of the oxidation of acetyl-CoA molecules.
The first reactant and last product are the same.
fadh2
A byproduct of the krebs cycle/citric acid cycle is carbon dioxide.
Since Krebs is a cycle, there is a pretty good argument that there is no "first metabolite". However, because citrate is a condensation product of OAA and acetyl-CoA, and acetyl-CoA is typically what is feeding in to the Krebs cycle, citrate could be considered the "first metabolite"
Fats and proteins are brought into the Krebs cycle by being converted. They can either be converted to glucose or acetyl which will go through Krebs cycle.
carbon dioxide and the Krebs cycle
NADH
FADH2 since pyruvic acid is needed to START the Krebs cycle
The first reactant and last product are the same.
The first reactant and last product are the same.