21. These last two points suggest a connection between pyrimidine anabolism and oxidative catabolism . 22. The second is catabolism , the breakdown of molecules. 23. The conversion to acetyl-CoA has more in common with fat catabolism . 24. It includes food intake, absorption, assimilation, biosynthesis, catabolism and excretion. 25. Catabolism therefore provides the chemical energy necessary for the maintenance and growth of cells.26. The sialidase is one of the most important enzymes of the sialic acid catabolism . 27. Catabolism breaks down large molecules, for example to harvest energy in cellular respiration.28. (note catabolism / anabolism aren't even links in the article ). 29. This enzyme participates in tyrosine and phenylalanine catabolism . 30. This enzyme also plays a significant role in the catabolism of phenylalanine and tyrosine.
