Chemistry of essential nutrients and their functions

Biochemistry can be defined as the science concerned with the chemical basis of life (Gk bios “life”). The cell is the structural unit of living systems. Thus, biochemistry
can also be described as the science concerned with the chemical constituents of living cells and with the reactions and processes they undergo. By this definition, biochemistry encompasses large areas of cell biology, of molecular biology, and of molecular genetics. The major objective of biochemistry is the complete understanding, at the molecular level, of all of the chemical processes associated with living cells. To achieve this objective, biochemists have sought to isolate the numerous molecules found in cells, determine their structures, and analyze how they function.

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