Synthesis of Other Substances in the Cell
Many thousand protein enzymes formed in the manner just described
control essentially all the other chemical reactions that take place in cells.
These enzymes promote synthesis of lipids, glycogen, purines, pyrimidines, and
hundreds of other substances. We discuss many of these synthetic processes in
relation to carbohydrate, lipid, and protein metabolism through 69. It is by
means of all these substances that the many functions of the cells are