Proteins are large molecules that determine a cell's structure and function.
DNA and genes are present in all living things. Genomics is the study of all the genes in an organism, also known as its genome. The science includes identifying the specific building blocks of all the genes in a cell, mapping their locations in relation to the rest of the DNA, and studying the function of those genes or combinations of genes. Proteomics is the study of the composition, structure, function and interactions of all the proteins in a cell. Genomic information is too voluminous for even a large team of researchers to remember or analyze, so the information is placed in complex databases in which the gene and protein structures and functions can be easily accessed, cross-referenced or queried.