Most biochemists deal with the chemistry of life process, such as metabolism, digestion and growth.
About three-fourths of all biochemists are involved in research. Some do basic research which emphasizes increasing scientific knowledge. Among the interests of biochemists is the study of the action of foods, drugs, serums, allergens, and other substances on living tissue and bodily functions such as breathing and digestion. Biochemists investigate the chemical aspects of cells and blood, antibodies, enzymes, and hormones. Many biochemists are interested in molecular biology-the study of genes and gene expression.