Example of intermediary metabolism may be sited by:
[A].
Formation of pyruvic acid from glucose, amino acid, deamination of amino acids and phosphorylation of glycerol yielding 3-phosphogly ceraldehyde
[B].
Formation of alpha-ketogluteric acid from pyruvic acid through Kreb's cycle, deamination of glutamic acid and from acetyl CoA formed by oxidation of fatty acids