The proteins and enzymes in a boiled egg have been denatured due to the application of heat, while this is not the case in a raw egg. The denaturing of proteins is a chemical change, in which the egg's physical properties also change, for example the interior solidifies.
Because for each glucose molecule there are two pyruvic acid molecules entering the system, two ATP molecules are formed. Also during the Krebs cycle<span>, the two carbon atoms of acetyl-CoA are released, and each forms a carbon dioxide molecule.</span>